How to compute the angle between two vectors.
How to label an angle and how to differentiate between acute, right, obtuse, and straight angles.
How to find the sum of a geometric series.
How to find the sum of an arithmetic series.
How to find the legs and hypotenuse in 30-60-90 triangles when given: the short leg, the long leg, or the hypotenuse.
How to define adjacent angles.
How to use the power reduction formulas to derive the half-angle formulas.
Overview of similarity: congruent angles, proportional corresponding sides
How to define and identify vertical angles.
How to define a midsegment in a triangle.
How to find the length of a leg or hypotenuse in a 45-45-90 triangle using the Pythagorean Theorem.
How to find the angles of a triangle by creating a linear equation.
How to use the ASA and AAS shortcuts to determine the congruence of two triangles.
How to relate the sides of an angle bisected and the lengths of the opposite side.