Question

Given two similar triangles, what would you need to know to find an unknown length? How would you find that unknown length?

Answer 1

I would need to know the length of a pair of corresponding sides. I would set up a proportion. I would put corresponding measures from the triangles in the same position in the ratios. Then I would cross-multiply to solve.

Explanation:

Answer 2

I would need to know the length of a pair of corresponding sides, so I could set up a proportion to solve for the unknown length. I would set the ratio of the known corresponding sides equal to the unknown measure, making sure I put corresponding measures from the triangles in the same positions in the ratios.

Explanation: