# geometry

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Triangle ABC is similar to triangle DEF. The sides of ABC are 5,8 and 11. What is the length of the shorttest side of DEF if its perimeter is 60?

• geometry -

Since the sides must be in the same ratio...

let the sides of the new triangle be
5x, 8x, and 11x

5x + 8x + 11x = 80

solve for x, then find 5x

• geometry -

5x + 8x + 11x = 60 , hit the wrong key

• geometry -

12.5

• geometry -

mc069-1.jpg
In mc069-2.jpg, FE = 13 and mc069-3.jpg. Find DF to the nearest tenth.

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