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![Machu Picchu, Geometry Theorems and Problems, Online Education](../machu_picchu_h1_910x120.jpg)
Perpendicular Lines, Theorems
and Problems - Table of Content (19)
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![Perpendicular Lines Index](perpendicular_lines_index_1.jpg) |
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![Area of Square and triangle, Elearning.](../problem/p112_area_triangle_elearn_17.jpg) |
Proposed Problem 112. Area of
square and triangle.
Perpendicular lines. |
![Pythagoras curiosity. Online tutoring.](../pythagoras/pythagoras_curiosity_17.jpg) |
The Pythagorean Curiosity
Triangles and squares, fifteen conclusions.
Perpendicular lines,
Parallel lines.
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![Triangle Square Theorem 1. Elearning, Online Tutoring](triangle_square_01_17.jpg) |
Triangle
and Squares Theorem 1: with Interactive Geometry Software
Step-by-Step construction, Manipulation, and animation.
Perpendicular lines, Parallel
lines. |
![Elearning 91](../problem/p091_similarity_elearning_17.jpg) |
Proposed Problem 91. Similar
Triangles, Altitude, Perpendicular
lines, Parallel lines. |
![](taylor_circle_theorem.jpg) |
Taylor Circle Theorem Using TracenPoche Dynamic Software
Step-by-Step construction, Manipulation, and animation,
Perpendicular lines.
Henry Martyn Taylor and the blind student of mathematics
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![](../problem/p078_circle_angles_17.jpg) |
Proposed Problem 78: Angles of a Circle.
Perpendicular and parallel lines, Midpoint, Diameter, Chord, Cyclic
quadrilateral, Congruence.
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![](../problem/p076_square_circle_17.jpg) |
Proposed
Problem 76: Area of a Circle.
Square, Circle, Circular Sector,
Perpendicular lines.
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![](orthopole_triangle_170.jpg) |
Interactive Orthopole of
a Triangle: Using TracenPoche Dynamic
Geometry Software, Online
Step-by-Step construction, manipulation, and animation,
Perpendicular lines. |
![](../problem/p070_squares_inscribed_17.jpg) |
Proposed Problem 70: Squares inscribed in a triangle, Similarity.
Perpendicular lines, Parallel
lines.
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![](../problem/p069_square_inscribed_17.jpg) |
Proposed Problem 69: Square inscribed in a triangle, Similarity.
Perpendicular lines, Parallel
lines.
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