This file illustrates the special right triangle of angles 30°, 60° and 90°.
A black square represents the borders of the file. Inside, the triangle is depicted with all of its special angles. The right angle is symbolized by a small square, and its measure, 90°, is written to the right and above it. The angle placed to the right of the 90° angle is shown as an arc, and its measure, 30°, is written to the left of the arc. The angle above the right angle is also represented by an arc, and its measure, 60°, is written below said arc. The hypotenuse (side opposite of the right angle) is of length 1, the side opposite the 30° angle is of length ½, and the side opposite the 60° angle is of length √3/2.
Own work
TealComet