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Perpendicular Lines, Theorems
and Problems - Table of Content (13)
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![Perpendicular Lines Index](perpendicular_lines_index_1.jpg) |
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![Intersecting Circles, Diameter](../problem/p705_intersecting_circles_1.jpg) |
Geometry Problem
705.
Intersecting Circles, Diameter, Angles, Measurement,
Perpendicular. |
![Orthocenter, triangle, midpoint, perpendicular](../problem/p704_orthocenter_triangle_1.jpg) |
Geometry Problem
704.
Triangle, Orthocenter, Altitude, Midpoint, Perpendicular. |
![Intersecting Circles, Diameter, Perpendicular](../problem/p701_circles_angles_1.jpg) |
Geometry Problem
701.
Intersecting Circles, Diameter, Perpendicular, Angles, Congruence. |
![Concentric Circles](../problem/p680-concentric-circles-1.jpg) |
Geometry Problem 680.
Concentric Circles, Radii, Chords, Perpendicular, Metric Relations. |
![Simson Line, Parallel](../problem/p678-simson-line-1.jpg) |
Geometry Problem 678.
Triangle, Simson Line, Circumcircle, Tangent, Parallel, Perpendicular, Collinear Points. |
![Triangle, Circle, Diameter, Perpendicular](../problem/p660_triangle_circle_1.jpg) |
Geometry Problem 660.
Triangle, Circle, Diameter, Perpendicular Lines. |
![Triangle, Altitudes, Circles, Angles](../problem/p658_triangle_circle_1.jpg) |
Geometry Problem 658.
Triangle, Altitudes, Diameter, Circle, Angles. |
![Triangle, Incircle, Parallel](../problem/p657_triangle_incircle_1.jpg) |
Geometry Problem 657.
Triangle, Incircle, Tangency Points, Parallel Lines, Congruence. |
![Archimedes Book of Lemmas Proposition 11](../problem/p651_archimedes_lemma_11_1.jpg) |
Geometry Problem 651.
Archimedes Book of Lemmas: Proposition 11
Perpendicular chords, Arcs, Radius. |
![Tangent Circles](../problem/p650_tangent_circle_chord_1.jpg) |
Geometry Problem 650.
Tangent Circles, Diameter, Radius, Chord, Perpendicular. |
![Archimedes Book of Lemmas Proposition 10](../problem/p649_archimedes_lemma_10_1.jpg) |
Geometry Problem 649.
Archimedes Book of Lemmas: Proposition 10
Tangent, Chord, Parallel, Midpoint. |
![Archimedes Book of Lemmas Proposition 9](../problem/p648_archimedes_lemma_09_1.jpg) |
Geometry Problem 648.
Archimedes Book of Lemmas: Proposition 9
Perpendicular chords, Arcs. |
![Semicircle, Perpendicular, Inscribed Circle, Tangent, Congruence](../problem/p639_arbelos_circle_1.jpg) |
Geometry Problem 639
Semicircle, Diameter, Perpendicular, Inscribed Circle, Tangent, Arbelos, Congruence. |
![Semicircle, Perpendicular, Inscribed Circle, Tangent, Chord](../problem/p637_arbelos_circle_1.jpg) |
Geometry Problem 637
Semicircle, Diameter, Perpendicular, Inscribed Circle, Chord, Tangent, Arbelos. |
![Semicircle, Perpendicular, Inscribed Circle, Tangent](../problem/p636_tangent_circle_1.jpg) |
Geometry Problem 636
Semicircle, Diameter, Perpendicular, Inscribed Circle, Common Tangent. |
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