FTCE General Knowledge Math Practice Test

In a right triangle, what is the measure of the angle opposite the hypotenuse?

1. 90 degrees

2. 45 degrees

3. 30 degrees

4. 180 degrees

The correct answer is: 90 degrees

In a right triangle, the angle opposite the hypotenuse is defined as the right angle, which measures 90 degrees. This is a fundamental property of right triangles, where one angle is always exactly 90 degrees, making the side opposite this angle the longest side, known as the hypotenuse. The remaining two angles in a right triangle must sum to another 90 degrees, as the total interior angles in any triangle always equal 180 degrees. Therefore, the angle opposite the hypotenuse is uniquely designated as the right angle, confirming that 90 degrees is the correct measure.