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![College Geometry Online, eLearning](../machu_picchu_h1_910.jpg)
Online Geometry: Parallel Lines, Theorems and Problems
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Parallel Lines, Page 2
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![Parallel Lines Index](parallel_lines_index_17.jpg) |
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![Trapezoid, Triangle, Perpendicular, Angle](../problem/p743-trapezoid-triangle-perpendicular-angle-1.jpg) |
Geometry Problem
743.
Trapezoid, Triangle, Perpendicular, Parallel, Angle. |
![Triangle, Median, Isosceles, Congruence, Parallel](../problem/p734_triangle_median_1.jpg) |
Geometry Problem
734.
Triangle, Isosceles, Median, Parallel, Angle Bisector, Congruence, Midpoint. |
![Triangle, Altitudes, Parallel, Circumcircle, Angle](../problem/p715_triangle_altitudes_1.jpg) |
Geometry Problem
715.
Triangle, Altitudes, Parallel, Circumcircle, Angle, Measurement. |
![Triangle, Parallel, Concurrent, Ceva, Midpoint](../problem/p714_triangle_parallel_1.jpg) |
Geometry Problem
714.
Triangle, Parallel, Cevians, Midpoints, Median, Ceva Theorem. |
![Parallelogram, Midpoint, Diagonal, Collinear, Metric Relations, Similarity, Congruence](../problem/p710_parallelogram_metric_1.jpg) |
Geometry Problem
710.
Parallelogram, Midpoint, Diagonal, Collinear Points, Metric Relations, Triangle, Similarity, Congruence. |
![Parallelogram, Midpoints, Diagonal](../problem/p709_parallelogram_metric_1.jpg) |
Geometry Problem
709.
Parallelogram, Midpoint, Diagonal, Metric Relations, Triangle. |
![Trianglr, Circumcicle, Concyclic](../problem/p702_circles_angles_1.jpg) |
Geometry Problem
702.
Triangle, Circumcircle, Parallel, Concyclic Points. |
![Parallelogram, Parallel lines, Collinear points](../problem/p659_parallelogram_1.jpg) |
Geometry Problem 659.
Parallelogram, Parallel Lines, Collinear Points. |
![Triangle, Incircle, Parallel](../problem/p657_triangle_incircle_1.jpg) |
Geometry Problem 657.
Triangle, Incircle, Tangency Points, Parallel Lines,
Congruence. |
![Triangle, Parallel Lines, Intersecting Lines](../problem/p633_triangle_parallel_1.jpg) |
Geometry Problem 633
Triangle, Parallel Lines, Intersecting Lines. |
![Cyclic quadrilateral, Congruence, Parallel](../problem/p628_cyclic_quadrilateral_1.jpg) |
Geometry Problem 628
Cyclic Quadrilateral, Congruence, Parallel Lines. |
![Triangle, Parallel, Angle Bisector](../problem/p625_triangle_bisector_1.jpg) |
Geometry Problem 625
Triangle, Parallel Lines, Congruence, Angle Bisector. |
![Two Parallelograms, Center, Parallel](../problem/p621_two_parallelograms_1.jpg) |
Geometry Problem 621
Three Rectangles, Diagonals, Centers, Angles. |
![Parallelogram, Diagonal, Parallel](../problem/p616_parallelogram_1.jpg) |
Geometry Problem
616
Parallelogram, Diagonals, Intersecting Lines, Parallel Lines. |
![Parallelogram, Diagonal, Parallel](../problem/p614_parallelogram_1.jpg) |
Geometry Problem
614
Parallelogram, Diagonals, Intersecting Lines, Parallel Lines. |
![Triangle, Altitude, Collinearity](../problem/p611_altitude_triangle_1.jpg) |
Geometry Problem
611
Altitude of a Triangle, Perpendicular, Collinear Points, Parallel. |
![Intersecting Circles, 90 degrees](../problem/p610_intersecting_circles_1.jpg) |
Geometry Problem
610
Intersecting Circles, Radius, Parallel, Common Tangent, Angle, 90 Degrees. |
![Isosceles triangle](../problem/p606_isosceles_triangle_1.jpg) |
Problem
606
Isosceles Triangles, Perpendicular and Parallel Lines. |
![Triangle, Semiperimeter](../problem/p531_triangle_semiperimeter.jpg) |
Problem 531.
Triangle, Angle Bisector, Midpoint, Parallel, Perimeter, Semiperimeter. |
![Geometry problem 518](../problem/p518_parallelogram_square_1.jpg) |
Problem 518.
Parallelogram, Five Squares, Centers, 45 Degrees, Measure. |
![Elearn 494: Circular Sector, 90 Degrees](../problem/p494_circular_sector_1.jpg) |
Problem 494.
Circular Sector, 90 Degrees, Semicircle, Chord, Parallel. |
![Elearn 492: Quadrilateral, CIrcle, Perpendicular, Parallel](../problem/p492_quadrilateral_circle_1.jpg) |
Problem 492.
Cyclic Quadrilateral, Circle, Perpendicular, Side, Diagonal, Parallel. |
![Elearn 489: Parallelogram, Areas](../problem/p489_parallelogram_area_1.jpg) |
Problem 489.
Parallelogram, Triangle, Quadrilateral, Area. |
![Circle, Area, 90 Degrees](../problem/p487_circle_area_1.jpg) |
Problem 487.
Intersecting Circles, Area, Diameter, Parallel, 90 Degrees. |
![Parallelogram, triangle, quadrilateral, area](../problem/p477_parallelogram_area_1.jpg) |
Problem 477.
Parallelogram, Triangle, Quadrilateral, Area. |
![Tangent circles, secant, parallel](../problem/p475_circle_tangent_1.jpg) |
Problem
475.
Tangent Circles, Secant, Tangent, Parallel. |
![Parallelogram, Diagonal, Circle](../problem/p474_parallelogram_circle_1.jpg) |
Problem 474.
Parallelogram, Diagonal, Circle, Vertex. |
![Triangle, Area, Similarity](../problem/p473_similarity_area_1.jpg) |
Problem 473.
Triangle, Parallel, Side, Parallelogram, Area, Similarity. |
![Triangle, Area, Similarity](../problem/p472_similarity_area_1.jpg) |
Problem 472.
Triangle, Parallel, Side, Parallelogram, Area, Similarity. |
![Triangle area, parallel, concurrency](../problem/p471_similarity_area_1.jpg) |
Problem 471.
Triangle, Parallel, Side, Concurrency, Area, Similarity. |
![Triangle area, Similarity](../problem/p470_similarity_area_1.jpg) |
Problem 470.
Triangle, Parallel, Side, Parallelogram, Area, Similarity. |
![Tangent Circles, Chords, Perpendiculars](../problem/p438_circle_chord_1.jpg) |
Proposed Problem 438.
Tangent Circles, Diameter, Chord, Perpendicular, Congruence,
Measurement, Parallel lines. |
![Problem 432: Trapezoid, Parallel, Similarity](../problem/p432_trapezoid_parallel_1.jpg) |
Proposed Problem 432.
Trapezoid, Parallel, Measurement, Similarity, Transversal. |
![Cyclic quadrilateral, Orthocenter, Parallelogram, Congruence](../problem/p413_cyclic_quadrilateral_1.jpg) |
Proposed Problem 413.
Cyclic Quadrilateral, Orthocenter, Parallelogram, Concurrency,
Congruence. |
![Cyclic quadrilateral, Perpendicular, Parallelogram, Congruence](../problem/p408_cyclic_quadrilateral_1.jpg) |
Proposed Problem 408.
Cyclic quadrilateral, Perpendicular, Parallelogram, Congruence. |
![Hexagon, Centroids](../problem/p402_hexagon_centroid_17.jpg) |
Proposed Problem 402.
Hexagon, Triangle, Centroid, Parallel, Congruence, Similarity. |
![Parallelogram, Area](../problem/p398_area_parallelogram_17.jpg) |
Proposed Problem 398.
Parallelogram, Area, Similarity, Congruence. |
![Triangle, Parallel, Concurrent lines](../problem/p392_triangle_collinear_17.jpg) |
Proposed Problem 392.
Triangle, Parallel lines, Concurrent lines. |
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