# Andrew claims that a wooden bookend in the shape of a 45°- 45°- 90° right triangle has side lengths of 9 in., 9 in., and 11 in. Is he correct?

##### 1 Answer

Nov 6, 2015

No; if the sides of the right angle are 9 in. long each, then the hypotenuse would need to be over 12 in.

#### Explanation:

According to the Pythagorean Theorem

for a right triangle with sides

For the given non-hypotenuse sides:

but Andrew claims