Actue Angle- An angle less than 90 but greater than 10

Bisect-The line that divides something into two equal parts.

chord-The line segment between two points on a given curve

Diameter- A straight line passing through a center of a circle and meeting circumference or surface at each

Equilateral Triangle- A triangle with all sides equal and all angles equal

Formula- A mathematical relationship or rule expressed in symbols

Golden spiral-A spiral that can be drawn in a golden rectangle. The figure forming the structure for the spiral is made up entirely of squares and golden rectangles

Trig identities-that show how to find the sine, cosine or tangent go half a given angle

Independent variable - A variable in an equation that may have its value freely chosen without considering values of any other variable

Joint variation-when we say z jointly proportional to a set of variables, it means that z directly proportional to each variable taken one at a time

Kite-A quadrilateral with two pairs of adjacent that are congruent

Linear-like a line.A description of any graph or data that can be modeled by a linear polynomial