A sangaku problem. A circle is inscribed in a triangle. A geometry puzzle...

A sangaku problem. A circle is inscribed in a triangle. A geometry puzzle...

This video is about a semicircle circle and a quarter circle inscribed in a quarter circle. Alternative solution: http://www.cut-the-knot.org/pythagora... Follow me:   / sybermath   Subscribe!: https://www.youtube.com/SyberMath?sub... Tangent circles, Pythagorean Theorem, geometry, inscribed figures, Analytical Geometry, quarter circles, SyberMath, Geometry Puzzles, Inscribed Figures, Geometry, semicircles, ...