Two triangles are similar if they have the same shape (but not necessarily the same size). Similar triangles have sides that are proportional. The figure shows two similar triangles. Notice that
the ratios of the corresponding sides all equal
.
![]()

If we know that two triangles are similar, we can set up a proportion to solve for the length of an unknown side.
Find the lengths x and y as needed in each pair of similar triangles.

We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.