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The perimeter of an isosceles triangle is 25 ft. The length of the third side is 2 ft less than the length of one of the equal sides. Find the measurement of the three sides of the triangle.

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Answer:

The side lengths are 9, 9 and 7.

Explanation:

The sum of the 2 equal sides plus the shorter side is 25 ft.

Representing these unknowns:

2 sides are of length s, and the third (shortest) side is then s - 2.

Thus, s + s + (s - 2) = 25, or 3s = 27. Thus, s = 9 and s-2 = 7

The side lengths are 9, 9 and 7.

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