How to identify parallel lines, a line parallel to a plane, and two parallel planes.
How to describe and label point, line, and plane. How to define coplanar and collinear.
How to find the midpoint of a segment with endpoints in rectangular coordinates, How to write the midpoint formula.
How to derive the equation for the distance between two points using the Pythagorean Theorem.
How to define a circle and a sphere using the word locus.