Triangle (disambiguation)
From Simple English Wikipedia, the free encyclopedia
In geometry, a triangle is the flat shape formed by joining three points (not in a straight line) with straight line segments. A triangle is a three sided polygon.
In music, a triangle is a musical instrument that is made from a metal tube. It is in the shape of a triangle. It is opened at one corner, and when it is hit with a wood or metal stick, it makes a sound.