Asked by Aurelia

On the left triangle, the shorter side is labeled 4 inches and the longer side is labeled 10 inches. On the right triangle, the shorter side is labeled x inches and the longer side is labeled 20 inches.

The two triangles above are similar. Find the value of x. Be sure to explain your steps.
Answered by oobleck
clearly, everything on the big triangle is 2 times the corresponding value on the smaller triangle. That's what "similar" means.
Answered by Henry2,
4/X = 10/20.
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