How do you make a right triangle with a tape measure?
Hei hei: 3, 4, 5 is not a right triangle?
The amount of a size. At its mid point as the center to measure half a size (that is half of the length of an arbitrary direction) can be. The original length at both ends with you later half a size of a point, is a triangle.The principle is the diameter angle is right angle
Three sides measure 345 respectively
