| A | B |
|---|
| Hypotenuse | longest side of a right triangle, opposite the right angle |
| Adjacent side | The side next to an angle (not the hypotenuse) |
| Opposite side | The side opposite an angle |
| sine | the ratio of the opposite side to the hypotenuse in a right triangle |
| cosine | The ratio of the adjacent side to the hypotenuse in a right triangle |
| tangent | The ratio of the opposite side to the adjacent side in a right triangle |
| Pythagorean Triples | Three integers that are sides of a right triangle like 3, 4, 5 |
| similar triangles | Triangles with the same angle measurements and proportional sides |
| right isosceles triangle | A triangle whose angles are 45,45 and 90 |
| equilateral triangle | A triangle whose angles are 60,60,60 |
