# GRE Math : How to find the perimeter of an acute / obtuse isosceles triangle

## Example Questions

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### Example Question #11 : Triangles The obtuse Isosceles triangle shown above has two sides with length and one side length . The length of side  inches. Side length . Find the perimeter of the triangle. inches inches inches inches inches inches

Explanation:

To find the perimeter of this triangle, apply the perimeter formula: Since, , and then must have a value of: This triangle has two side lengths of inches, and one side length of inches.

Thus, the solution is: ### Example Question #12 : Isosceles Triangles

A triangle has two sides with length and one side length . The length of side  yard. If the length of  the length of side , what is the perimeter of the triangle? yard yard yard yard yard yard

Explanation:

The first step to solving this problem is that we must find the length of length Since, is 4 the length of side , use the following steps:  Now, apply the formula:  2 Next →

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