Question

Jessica calculated the missing side length of one of these triangles using the Pythagorean Theorem. Which triangle was it?

E
F
G
H

Answer 1

G

Explanation:

We can find a missing length of a triangle using a Pythagorean theorem if and only the triangle is a right angled triangle.

The side of the missing length is:

a^+b^=c^

2^+4^=c^

4+16=c^

20=c^

`√(20) = c ^(2) \\ 4 √(5) = c`