Match the vocabulary word with the correct definition. 1. acute angle
A triangle with exactly one right angle and two acute angles.
2. right angle
an angle that measures greater than 0°and less than 90°.
3. similar triangles
the longest side of a right triangle; the side opposite the right angle.
4. right triangle
a pair of triangles that have equal angle measures and proportionate side lengths.
5. hypotenuse
an angle that measures exactly 90°