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 the vocabulary word vertex applies to different objects in Geometry.
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.