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							Geometry Art Problems - Visual Index |  
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      Plane Geometry Art - Visual 
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		Geometry Art 1 
		- 10.Angle, Triangle, Quadrilateral, Congruence, 20, 30, 45, 60, 80, 120 
		degrees, Median, Auxiliary lines.
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		Geometry Art 11 - 20.Angle, Angle bisector, Triangle, Altitude, Median, Congruence, Cevian, 
		Circle, Excircle, Excenter, Inradius, Exradius
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		Geometry Art 21 - 30.Right triangle, Altitude, Incircle and inradius, Congruence, Circle.
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		Geometry Art 31 - 40.Triangle, Incenter, Orthocenter, Quadrilateral, Circle, Congruence, 
		Collinearity.
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		Geometry Art 41 - 50.Triangle, Sangaku, Quadrilateral, Circle, 30-60 Degrees.
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		Geometry Art 51 - 60.Triangle, Quadrilateral, Circle, Cyclic Quadrilateral.
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		Geometry Art 61 - 70.Triangle, Quadrilateral, Circle, Cyclic, Similarity.
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		Geometry Art 71 - 80.Cyclic Quadrilateral, Intersecting Circles, Area, Inradius, Incircle.
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		Geometry Art 81 - 90.Triangle, Quadrilateral, Circle, Incircle, Circumcircle, Excircle, 
		Inradius, Circumradius, Exradius, Contact Triangle, Area, Midpoint.
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		Geometry Art 91 - 100.Similarity, Triangles, Altitude, Parallel, Circumcircle, Parallelogram, 
		Incenter, Area, Centroid, Quadrilateral, Archimedes, Pythagoras.
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		Geometry Art 101 - 110.Angle, Equilateral Triangle, Pythagorean Theorem, Median, Heron, Cevian, 
		Contact Triangle.
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		Geometry Art 111 - 120.Orthogonal Circles, Triangle, Square, Area, Incircle, Excircle, Tangent, 
		Incenter.
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				Geometry Art 121 - 130.Triangle, Area, Similarity, Trisection, Hexagon, Star, Incenter, 
		Centroid, Parallel, Proportions, Angle Bisector, Ratio.
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				Geometry Art 131 - 140.Triangle, Parallelogram, Van Aubel, Collinearity, Concurrency, 60 
		Degrees, Incenter, Orthocenter, Incircle, Congruence, Midpoint, Angle 
		Bisector, Altitude, Perpendicular, Parallel, Concyclic Points, Nagel 
		Theorem, Circumradius, Semiperimeter, Excircle, Tangent, Ratio.
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		Geometry Art 141 - 150.Triangle, Quadrilateral, Parallelogram, Incircle, Incenter, Tangent, 
		Parallel, Perimeter, Area, Inradius, Circumradius, Midpoint, Varignon, 
		Trisection.
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		Geometry Art 151 - 160.Triangle, Quadrilateral, Area, Trisection, Circle, Proportion, Diagonal, 
		Chord,Inradius, Circumradius, Exradius, Euler, distance, Incenter, 
		Circumcenter, Excenter, Incircle, Circumcircle.
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		Geometry Art 161 - 170.Area, Triangle, Parallelogram, Trapezoid, Pentagon, Diagonal, Midpoint, 
		Octagon.
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		Geometry Art 171 - 180.Area, Triangle, Quadrilateral, Circle, Parallelogram, Trapezoid, Square, 
		Rhombus, Diagonal, Angle, Tangent, Trisection.
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		Geometry Art 181 - 190.Right Triangle, Trapezoid, Square, Intersecting Circles, Circular 
		Sector, 90 Degrees, Angles, Trisection, Hypotenuse, Distance, Incenter, 
		Altitude, Diagonal, 45 Degrees, Tangent, Chord, Perpendicular.
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		Geometry Art 191 - 200.Triangle, Circle, Square, Area, Circle, Diameter, Altitude, Orthocenter, 
		Semiperimeter, Inradius, Exradius, Quadrilateral, Angle, Tangent, Right 
		triangle.
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		Geometry Art 201 - 210.Right Triangle, Incircle, Excircle, Area, Points of Tangency, Inradius, 
		Exradius, Semiperimeter, Hypotenuse, 360 Degrees, Angle.
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		Geometry Art 211 - 220.Equilateral triangle, Quadrilateral, Area, Cyclic Quadrilateral, 60 
		Degree, Angle Bisector, 120, incircle, Inradius, Semicircle, Tangent, 
		Concurrency, Right triangle, Altitude, Projection, Rhombus, 
		Perpendicular, Arithmetic Mean, Distance.
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		Geometry Art 221 - 230.Isosceles, Equilateral triangle, Viviani's theorem, Altitude, Distances, Regular Polygon, Apothem, Centroid, Midpoint, Perpendicular, Transversal.
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		Geometry Art 231 - 240.Triangle, Quadrilateral, Square, Parallelogram, Trapezoid, Altitude, Distances, Midpoint, Perpendicular, Transversal.
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		Geometry Art 241 - 250.Triangle, Quadrilateral, Congruence, Area, Parallelogram, Square, Diagonal, Center, Napoleon, Median, Midpoint.
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		Geometry Art 251 - 
		260.Parallelogram, Rectangle, Triangle, Square, Circle, Area, Side,  Equilateral, Isosceles, Centroid, Distance, Vertex, Circumcircle, Incircle, Tangent, Diagonal.
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		Geometry Art 261 - 
		270.Regular Polygon, Pentagon, Hexagon, Circle, Tangent, Similarity,  Triangle, Hypotenuse, Catheti, Geometric Mean, Altitude, Projection, Fractional Exponent.
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		Geometry Art 271 - 
		280.Circle, Quadrilateral, Square, Tangent, Cube, Triangle, Isosceles, Area, 90-80-80-20 Degrees, Circumcircle, Sagitta, Inradius, Chord, Perpendicular.
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		Geometry Art 281 - 
		290.Triangle, Square, Circle, Octagon, Congruence, Isosceles, Equilateral, 90 Degrees, Circular Sector, Semicircle, Tangent, Radius, Diameter, Harmonic Mean.
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		Geometry Art 291 - 
		300.Triangle, Circle, Square, Congruence, Similarity, Circumradius, Perpendicular, Parallel, Secant, Tangent, Chord, Intersection, Midpoint, Radius, Angle.
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		Geometry Art 301 - 
		310.Circle, Tangent, Secant, Square, Triangle, Angle Bisector, 45, 60, 90, 120 Degrees, Side, Nonagon, Midpoint, Arc, Diagonal, Semicircle.
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		Geometry Art 311 - 
		320.Circle, Semicircle, Chord, Diameter, Tangent, Cyclic quadrilateral,  Geometric mean, Square, Right triangle, Altitude, Collinearity, Circumcircle, Incenter, Excenter.
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		Geometry Art 321 - 
		330.Triangle, Square, Circle, Area, Cyclic quadrilateral, Tangent, Incenter, Circumcenter, Excircle, Midpoint, Altitude, Collinearity, Concurrence, Isosceles, Equilateral, Parallel, Perpendicular, Diameter, Concyclic.
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		Geometry Art 331 - 
		340.Square, Circle, Similarity, Cyclic quadrilateral, Trapezoid, Triangle, Isosceles, Circumcircle, Incircle, Diagonal, Tangent, Perpendicular, Parallel, Concyclic points.
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		Geometry Art 341 - 
		350.Triangle, Quadrilateral, Pentagon, Hexagon, Inscribed circle, Tangent, Semiperimeter, Equal circles, Concurrent lines, Altitude, Concyclic Points, Cevian, Incircle.
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		Geometry Art 351 - 
		360.Rhombus, Incircles, Common tangent, Tangential quadrilateral, Incircle, Inradii, 45 Degrees, Concyclic, Circle, Square, Area, Triangle, 80-80-20 Degrees.
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		Geometry Art 361 - 
		370.Right triangle, Incircle, Incenter, Tangency points, Angle, Circle, Chord, Perpendicular, Congruence, Pythagoras, Obtuse, Diameter, Area, Circular sector.
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		Geometry Art 371 - 
		380.Excenter, Incenter, Square, Inscribed circle, Triangle, Area, Tangent, Diagonal, Perpendicular, Altitude, Angle, Congruence, Parallel.
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		Geometry Art 381 - 
		390.Quadrilateral, Diagonals, Angle Bisectors, Semi-sum of Angles, Concave, Difference, Parallel, Perimeter, Perpendicular, Congruence, Cyclic, Harmonic Mean.
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		Geometry Art 391 - 
		400.Triangle, Parallelogram, Parallel lines, Collinear points, Concurrent, Orthocenter, Circumcircle, Congruence, Square, 15 Degree, Equilateral, Trisector.
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		Geometry Art 401 - 
		410.Area, Triangle, Angle bisector, Circumcircle, Perpendicular bisector, Congruence, Hexagon, Centroid, Similarity, Congruence, Area, Equilateral, Concurrent.
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		Geometry Art 411 - 
		420.Triangle, Median, Angles, Cevian, Congruence, Cyclic quadrilateral, Orthocenter, Parallelogram, Concurrency, Altitude, Trisector, Area, Tangent, Circle.
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		Geometry Art 421 - 
		430.Right Triangle, Regular Pentagon, Cevian, Angles, Measurement, 30 Degrees, Congruence, Circumcircle, Circumcenter, Altitude, CIrcumradius, Quadrant, Area.
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		Geometry Art 431 - 
		440.Quadrilateral, Trapezoid, Midpoint, Diagonal, Transversal, Parallel, Measurement, Similarity, Transversal, Proportion, Ratio, Congruence, Tangent, Isosceles.
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		Geometry Art 441 - 
		450.Quadrilateral, Triangle, Area, Sagitta, Proportion, Measurement, Similarity, Median, Cevian, Transversal, Congruence, Circle, Tangent, Intersection, Secant.
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		Geometry Art 451 - 
		460.Triangle, Rhombus, Median, Congruence, Proportion, Circle, Tangent, Intersection, Circular segment, Area, Incircle, Inradius, 45 Degrees, Chord, Secant.
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		Geometry Art 461 - 
		470.Circle, Tangent, Right Angle, Center, Distance, Isosceles, Transversal, Measurement, 90 Degrees, Arc, Square, Radius, Concentric, Congruence, Chord.
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		Geometry Art 471 - 
		480.Triangle, Parallel, Side, Concurrency, Area, Similarity, Parallelogram, Diagonal, Circle, Vertex, Tangent, Secant, circumcenter, quadrilateral,  Proportion.
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		Geometry Art 481 - 
		490.Triangle, Altitude, Cevian, Perpendicular, Angle, Circumcircle, Incenter, Excenter, Midpoint, Cyclic, Square, 90 Degrees, Proportion, Measurement, Side, Circle.
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		Geometry Art 491 - 
		500.Square, Right Triangle, Incircle, Inscribed Circle, Radius, Cyclic quadrilateral, Diagonal, Parallel, Chord, 120 Degrees, Angle bisector, Concurrent, Perpendicular.
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		Geometry Art 501 - 
		510.Triangle, Center, Midpoint, Square, Perpendicular, Equilateral, 60 Degrees, Angle, Segment, Congruence, Area, Mind Map.
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		Geometry Art 511 - 
		520.Triangle, Parallelogram, Double Angle, Angle Bisector, Measure, Square. Concurrency, Area, Cevian, Congruence, Right triangle, 45 Degrees, Perpendicular.
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		Geometry Art 521 - 
		530.Triangle, Squares, Altitude, Rectangle, Area, Circle, Collinear, Median, Trapezoid, Measurement, Tangent, Radius, Equilateral, Circumcircle,  Congruence.
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		Geometry Art 531 - 
		540.Triangle, Circumcircle, Area, Angle Bisector, Midpoint, Parallel, Perimeter, Perpendicular, Euclid Elements, Square, Dissection, Sawayama - Thebault's theorem.
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		Geometry Art 541 - 
		550.Right Triangle, Altitude, Angle Bisector, Congruence, Median, Area, Trisector, 60 Degrees, Equilateral, Parallel, Transversal, Circumcircle, Concyclic, Similarity.
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		Geometry Art 551 - 
		560.Right Triangle, Altitude, Angle Bisector, Congruence, Median, Area, Trisector, 60 Degrees, Equilateral, Parallel, Transversal, Circumcircle, Concyclic, Similarity.
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		Geometry Art 561 - 
		570.Right Triangle, Altitude, Angle Bisector, Congruence, Median, Area, Trisector, 60 Degrees, Equilateral, Parallel, Transversal, Circumcircle, Concyclic, Similarity.
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		Geometry Art 571 - 
		580.Circle, Diameter, Chord, Perpendicular, Measurement, Right triangle, Median, Diameter, Excircle, Tangent circles, Cyclic quadrilateral, Angle bisector, Centroid, Isosceles, Midpoint, Concyclic, 90 Degrees, Transversal, Area, Tangency Points.
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		Geometry Art 581 - 
		590.Quadrilateral, Diagonals, Concurrency, Incenter, Metric Relations, Circumcenters, Parallelogram, Octagon, Areas, Tangency Point, Midpoint, Cyclic Quadrilateral, Volume of two Triangular Pyramids, Equal Trihedral Angle, Product of three Edges.
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		Geometry Art 591 - 
		600.Triangle, Circle, Incenter, Quadrilateral, Congruence.
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		Geometry Art 601 - 
		610.Triangle, Quadrilateral, Parallelogram, Square, Circle, Line, Angle, Metric Relations, Concurrency.
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		Geometry Art 611 - 620.Triangle, Parallelogram, Rectangle, Incircle, Congruence, Altitude, Perpendicular, Collinearity.
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		Geometry Art 621 - 630.Triangle, Circle, Clawson Point, Centers, Similarity.
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		Geometry Art 631 - 640.Triangle, Collinearity, Incenter, Circle, Arbelos.
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		Geometry Art 641 - 650.Circle, Tangent, Semicircle, Perpendicular, Arbelos, Diameter.
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		Geometry Art 651 - 660.Archimedes Book of Lemmas, Circle, Triangle, Congruence, Parallelogram, Similarity.
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		Geometry Art 661 - 670.Triangle, Circle, 60 Degrees, Incenter, Circumcenter, Orthocenter, Parallelogram, Metric Relations, Congruence, Similarity.
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		Geometry Art 671 - 680.Triangle, Circle, Congruence, Geometric Mean, Tangent, 45 Degrees, Collinear Points, Simson Line, Concentric, Similarity.
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		Geometry Art 681 - 690.Triangle, Incircle, Excircle, Ceva, Semiperimeter, Concurrency, Gergonne, Nagel Point.
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		Geometry Art 691 - 
		700.Triangle, Quadrilateral, Circle, Metric Relations, Square, 30-60-120 Degrees, Area, Congruence.
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		Geometry Art 701 - 
		710.Triangle, Quadrilateral, Circle, Metric Relations, Parallelogram, Collinear Points, Incircle, Circumcircle, Orthocenter, Congruence, Similarity, Collinearity.
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		Geometry Art 711 - 
		720.Triangle, Quadrilateral, Circle, Incenter, Excenter, Intersecting Circles, Concyclic Points, Circumcircle, Tangent, Perpendicular, Parallel, Altitude, Median.
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		Geometry Art 721 - 
		730.Triangle, Circle, Altitude, Orthocenter, Circumcircle, Perpendicular, Collinearity, Concurrency, Square, Dodecagon, Circumscribed Quadrilateral.
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		Geometry Art 731 - 
		740.Triangle, Circle, Quadrilateral, Parallelogram, Circumcircle, Angle Bisector, Semi-sum, Isosceles, Orthocenter, Orthic, Perpendicular, Altitude, Congruence.
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		Geometry Art 741 - 
		750.Triangle, Circle, Quadrilateral, Parallelogram, Circumcircle, Angle Bisector, Semi-sum, Isosceles, Orthocenter, Orthic, Perpendicular, Altitude, Congruence.
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		Geometry Art 751 - 
		760.Triangle, Equilateral, Isosceles, Scalene, Parallelogram, Square, Circle Congruence, Similarity.
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		Geometry Art 761 - 
		770.Triangle, Equilateral, Isosceles, Scalene, Parallelogram, Circle, Inradius, Exradius, Orthocenter, Circumcenter, Angle Bisector, Congruence, Similarity.
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		Geometry Art 771 - 
		780.Triangle, Circle, Isogonal Lines, Parallelogram, Scalene, Inradius, Circumradius, Distance, Orthocenter, Circumcenter, Pentagon, Congruence, Similarity, Area.
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		Geometry Art 781 - 
		790.Triangle, Orthocenter, Circumcenter, Parallelogram, Midpoint, Right Triangle, Altitude, Incenter, Incircle, Inradius, Perpendicular, Parallel Lines.
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		Geometry Art 791 - 
		800.Right Triangle, Altitude, Incenter, Incircle, Inradius, Circumcircle, Circumradius.
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		Geometry Art 801 - 
		810.Butterfly theorem, Circle, Chord, Midpoint, Similarity, Cyclic quadrilateral, Congruence.
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		Geometry Art 811 - 
		820.Triangle, Incircle, Semicircle, Diameter, Tangent, Tangency Points, Arbelos, Area.
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		Geometry Art 821 - 
		830.Triangle, Circumcircle, Chord, Parallel, Arc, Metric Relations
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		Geometry Art 831 - 
		840.Triangle, Circumcircle, Chord, Parallel, Arc, Metric Relations
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		Geometry Art 841 - 
		850.Triangle, Median, Centroid, Circumcenter, Congruence, Similarity, Parallel, Perpendicular, Quadrilateral, Special Right Triangle
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		Geometry Art 851 - 
		860.Square, Semicircle, Quadrant, Arc, Perpendicular, Metric Relations
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		Geometry Art 861 - 
		870.Cyclic Quadrilateral, Triangle, Circle, Rectangle, Square, Center, 90 Degrees, Midpoint, Congruence
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		Geometry Art 871 - 
		880.Congruent Circles, Intersecting Circles, Secant, Center, Angle Trisection, Triple Angle.
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		Geometry Art 881 - 
		890.Triangle, Intersecting Circles, Three Tangent Lines, Midpoint.
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		Geometry Art 891 - 
		900.Triangle, Circumcircle, Incenter, Circle, Tangent, Collinear Points. GeoGebra, HTML5.
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		Geometry Art 901 - 
		910.Bicentric Quadrilateral, Incircle, Circumcircle, Circumscribed, Inscribed, Perpendicular.
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		Geometry Art 911 - 
		920.Circle, Diameter, Congruence, Cyclic Quadrilateral.
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		Geometry Art 921 - 
		930.Circle, Diameter, Triangle, Chord, Incircle.
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		Geometry Art 931 - 
		940.Triangle, Circles, Tangent, Incircle.
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		Geometry Art 941 - 
		950.Triangle, Circles.
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		Geometry Art 
		1161.Triangle, Circle.
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