# Thread: missing length of a triangle

1. ## missing length of a triangle

Find the missing length of the right triangle.
20 ,48

A) 52 B) 54 C) 53 D) 51

2. Have you heard of Pythagoras Theorem? Here is a good tutorial: Pythagoras Theorem

Basically, in a right angle triangle the formula for the three sides is:

$\displaystyle a^2=b^2+c^2$

Where $\displaystyle a$ is the hypotenuse.