How to write proportions based on a triangle's side lengths?
For my homework we have to do proportions based on a triangle's side lengths. For example, the problem I'm working on: two sides are x (also the same length) while one side is 28 (centimeters or inches it doesn't specify). We have to solve for x. The directions are wriiten: Write a proportion and solve for each missing measure, x. But how to write the proportions?