How to factor the sum or difference of cubes.
How to apply the triangle angle sum theorem.
How to derive the formula to find the sum of angles in any polygon.
How to solve a problem when asked to switch the digits of a 2-digit number.
How to find the measure of one angle in any equiangular or regular polygon.
How to find the sum of a geometric series.
How to find the sum of an arithmetic series.
How to derive the sine of a sum formula.
How to find the sum of the exterior angles in a polygon and find the measure of one exterior angle in an equiangular polygon.
Factoring is turning a sum or difference into a product
How to identify supplementary and complementary angles.
How to define a series.
How to find additive and multiplicative inverses.
How to use the sine and cosine addition formulas to prove the double-angle formulas.
How to approximate the area under a curve using rectangles.