Question

Geometry. Find the indicated side of the triangle. Include a clear answer and description if possible.

Answer 1

That is a right isosceles triangle, also known as a 45 45 90 triangle.

In such a triangle, the sides "a" and "b" are equal and they equal the hypotenuse multiplied by 1 / sq rt(2) or 0.7071067812

Sides "a" and "b" equal 7.071067812

Source 1728.com/trig2.htm