8 Circles Sangaku

Explore this 'sangaku' by moving the red points.[br]If the length of the short side of the triangle is 10 units, find the lengths of the other two sides.[br]What is the radius of each of the 8 circles?[br]What mathematical ideas arise as you explore this applet?[br]Source: https://www.cut-the-knot.org/pythagoras/8CirclesSangaku.shtml

Information: 8 Circles Sangaku