how do i solve?

Question

There is a right isosceles triangle. The two congruent side lengths are 4. What is the value of the missing side? Round the answer to the nearest 100th.

Answer 1

The previous responses are quite serviceable. However, you might also remember the Pythagorean Triple for an isosceles right triangle. x, x, x√ 2.

This should help you solve the problem quickly.

Answer 2

The third side is the hypotenuse.

h² = 4² + 4²

Answer 3

You solve by using the Pythagorean Theorem.

Answer 4

Hello Jason!

If it's a right triangle, then you can use the Pythagoras' theorem:

4² + 4² = c²

c² = 2*4²

c = 4√2

c = 5.66