GRE Quantitative Reasoning › How to find the perimeter of an acute / obtuse triangle
The obtuse Isosceles triangle shown above has two sides with length and one side length
. The length of side
. The length of side
. Find the perimeter of the triangle.
To solve this problem, apply the formula:
Side , side
must equal
Since this is an Isosceles triangle, there must be two sides with a length of .
Thus, plug in each side lengths value to find the solution: