How to derive the area of a trapezoid formula using the area of a rectangle.
How to identify a trapezoid and its special properties.
How to define the midsegment of a trapezoid, calculate its length, and relate it to a triangle midsegment.
How to factor the sum or difference of cubes.
How to apply the triangle angle sum theorem.
How to strategize about solving a problem with trapezoidal arches.
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.