Question

Find the length in the kite labeled x
12 in.
9 in.
13 in

Answer 1

15 in

Explanation:

You have to use pythagoras' theorem, which is a^2=b^2+c^2 (a being the hypotenuse), because it is a right-angled triangle.

so you do 9^2+12^2, which equals 225. Then you square root that to get 15.