Online Geometry: Circles, Theorems and Problems

Circles - Table of Content (Page 24)

Proposed Problem 38.
Right Triangle, altitude, incircles, incenters, and angles.

Proposed Problem 35.
Incenters and Inradii in Cyclic Quadrilateral.

Sawayama -Thebault's theorem

Proposed Problem 34.
Right triangle, cevian, incircles, tangents and inradius.

Apollonius' Problem for Three Circles Illustration with animation and sound.

Pascal's Mystic Hexagram Theorem Proof

Eyeball Theorem: Animated Angle to Geometry Study.

Seven Circles Theorem

Equal Incircles Theorem

Archimedes' Book of Lemmas
 

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