How to write an equation for the coordinate planes or any plane that is parallel to one.
How to find a vector normal (perpendicular) to a plane given an equation for the plane.
How to identify parallel lines, a line parallel to a plane, and two parallel planes.
How to plot complex numbers on the complex plane.
How to find the angle between planes, and how to determine if two planes are parallel or perpendicular.
How to describe and label point, line, and plane. How to define coplanar and collinear.
How to graph inequalities in the xy plane.
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 create the different conic sections.
Short, helpful video on ACT Geometry by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.
How to define a circle and a sphere using the word locus.
How to express a complex number in trigonometric form.