How to derive two more cosine double-angle formulas.
How to define and construct an angle bisector.
How to define a central angle and find the measure of its intercepted arc; how to describe the intercepted arcs of congruent chords.
How to graph inequalities in the xy plane.
How to describe same side interior and same side exterior angles and their special properties.
How to use definite integrals to find the area between a curve or under a curve.
How to use a protractor to measure an angle.
How to find the angles of a triangle by creating a linear equation.
How to derive the equation for the distance between two points using the Pythagorean Theorem.
How to measure the sine and cosine of 150.
How to prove two triangles are similar using a line parallel to a base.
How do we measure sine and cosine of pi/4?
How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle.