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							Recent additions (Page 23), Online 
							Learning
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		Geometry Problems 
		501 - 
		510.Triangle, Center, Midpoint, Square, Perpendicular, Equilateral, 60 Degrees, Angle, Segment, Congruence, Area, Mind Map.
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		English ESL/EFL: Conversations: 
		In a New Neighborhood, Interactive Mind Map. |  
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		English ESL/EFL: Conversations: 
		Renting an Apartment, Interactive Mind Map. |  
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		English ESL/EFL: Conversations: 
		Selling a House, Interactive Mind Map. |  
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		English ESL/EFL: Conversations: 
		Shopping, Interactive Mind Map. |  
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		English ESL/EFL: Conversations: 
		Small Talk, Interactive Mind Map. |  
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		English ESL/EFL: Conversations: 
		Socializing, Interactive Mind Map. |  
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		English ESL/EFL: Conversations: Travel, Mind Map. |  
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		Geometry Problems 
		511 - 
		520.Triangle, Parallelogram, Double Angle, Angle Bisector, Measure, Square. Concurrency, Area, Cevian, Congruence, Right triangle, 45 Degrees, Perpendicular.
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		Geometry Problems 
		521 - 
		530.Triangle, Squares, Altitude, Rectangle, Area, Circle, Collinear, Median, Trapezoid, Measurement, Tangent, Radius, Equilateral, Circumcircle,  Congruence.
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		Geometry Problems 
		531 - 
		540.Triangle, Circumcircle, Area, Angle Bisector, Midpoint, Parallel, Perimeter, Perpendicular, Euclid Elements, Square, Dissection, Sawayama - Thebault's theorem.
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		Geometry Problems 
		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 Problems 
		361 - 
		370.Right triangle, Incircle, Incenter, Tangency points, Angle, Circle, Chord, Perpendicular, Congruence, Pythagoras, Obtuse, Diameter, Area, Circular sector.
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		Geometry Problems 
		371 - 
		380.Excenter, Incenter, Square, Inscribed circle, Triangle, Area, Tangent, Diagonal, Perpendicular, Altitude, Angle, Congruence, Parallel.
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		Geometry Problems 
		381 - 
		390.Quadrilateral, Diagonals, Angle Bisectors, Semi-sum of Angles, Concave, Difference, Parallel, Perimeter, Perpendicular, Congruence, Cyclic, Harmonic Mean.
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		Geometry Problems 
		391 - 
		400.Triangle, Parallelogram, Parallel lines, Collinear points, Concurrent, Orthocenter, Circumcircle, Congruence, Square, 15 Degree, Equilateral, Trisector.
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		Geometry Problems 
		401 - 
		410.Area, Triangle, Angle bisector, Circumcircle, Perpendicular bisector, Congruence, Hexagon, Centroid, Similarity, Congruence, Area, Equilateral, Concurrent.
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		Geometry Problems 
		411 - 
		420.Triangle, Median, Angles, Cevian, Congruence, Cyclic quadrilateral, Orthocenter, Parallelogram, Concurrency, Altitude, Trisector, Area, Tangent, Circle.
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		Geometry Problems 
		421 - 
		430.Right Triangle, Regular Pentagon, Cevian, Angles, Measurement, 30 Degrees, Congruence, Circumcircle, Circumcenter, Altitude, CIrcumradius, Quadrant, Area.
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		Geometry Problems 
		431 - 
		440.Quadrilateral, Trapezoid, Midpoint, Diagonal, Transversal, Parallel, Measurement, Similarity, Transversal, Proportion, Ratio, Congruence, Tangent, Isosceles.
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		Geometry Problems 
		441 - 
		450.Quadrilateral, Triangle, Area, Sagitta, Proportion, Measurement, Similarity, Median, Cevian, Transversal, Congruence, Circle, Tangent, Intersection, Secant.
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