Right triangle has one 90° angle and is the basis of trigonometry. Hypotenuse is the longest side opposite the 90° angle. Triangle sides are denoted by a, b, c, with c being hypotenuse. Altitude (h) divides triangle into two similar triangles
A 30-60-90 triangle is a special right triangle with angles 30°, 60°, and 90°. The angles are in the ratio 1:2:3. The side opposite the 30° angle is the shortest leg. The side opposite the 60° angle is the longer leg. The side opposite the 90° angle is the hypotenuse