Dynamic Geometry 1476: Droz-Farny Line Theorem, Triangle, Orthocenter, Perpendicular, Collinear Midpoints

Interactive step-by-step animation using GeoGebra. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

Details: Click on the figure below.

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Dynamic Geometry 1475: Clifford Intersecting Circles Theorem, Step-by-step Illustration

Interactive step-by-step animation using GeoGebra. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

Details: Click on the figure below.

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Geometry Problem 1386: Thabit ibn Qurra Theorem, generalized Pythagorean Theorem

Geometry Problem. Post your solution in the comment box below.
Level: Mathematics Education, High School, Honors Geometry, College.

Details: Click on the figure below.

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Online Geometry: Carnot's Theorem in an Acute Triangle

Classical Theorems
Click the figure below to see the complete classical theorem.

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Classical Theorems

Index
Pythagorean theorem, Heron, Ptolemy, Brahmagupta, Menelaus, Ceva, Nine Point Center, Theaetetus, Euler's Polyhedron, Pascal, Pappus, van Aubel, Eyeball, Butterfly, and more.



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