Question

A store's sign is the shape of an equilateral triangle. One side measures 21 inches. What is the length of each of the other two sides?

Answer 1

Equilaterial: all sides equal.

Answer 2

http://www.mathsisfun.com/triangle.html

Answer 3

Thank you very much...

Answer 4

You're welcome.

Please, though, use the same name for all of your posts.