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Home > PC > Chapter 4 > Lesson 4.2.4 > Problem 4-116

4-116.

Find the length of in the triangle below.
Right triangle, horizontal hypotenuse, segment from right angle perpendicular to hypotenuse, divides hypotenuse into 2 sections, left section labeled 3, right section labeled 15.

These are similar triangles. Set up a proportion and solve for .