3-4-5 Triangle (2)
The following case is a modified version so that the tangent line is replaced by a bigger circle of radius 2R. The 3-4-5 triangle appears here again, surprisingly.
3-4-5 Triangle (1)
M1 This a 3-4-5 triangle, a special case and the most simple example of Pythagorean theorem (勾股定理 in Chinese） You can’t see any magic in the picture above until you see the picture below. When two big circles of equal radius, a small circle and a line are tangent to each other, you’ll find a …