Trigonometry

A unit of measurement of angles.

The longest side of a right triangle, opposite the right angle.

Equal to the ratio of the adjacent side to an acute angle to the hypotenuse. (In a right triangle)

A straight line from the center to the circumference of a circle.

Square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.

Triangle that has an angle with more than 90º

Figure with three straight sides and three angles.

A triangle that has 3 angles with less than 90º.

The extent or measurement of a surface.

Triangle that has two sides of equal length.

Ratio of the opposite side of a given angle to the adjacent side. (In a right triangle)

Ratio of the opposite side of a given angle to the hypotenuse. (In a right triangle)

A triangle that all of its tree sides are equal.

Line forming the boundary of a closed geometric shape.