How to identify parallel lines, a line parallel to a plane, and two parallel planes.
How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines.
How to take the converse of the parallel lines theorem.
How to prove two triangles are similar using a line parallel to a base.
How to determine whether two lines in space are parallel or perpendicular.
How to determine whether lines are parallel, perpendicular, or neither.
How to prove that opposite angles in a cyclic quadrilateral are congruent; how to prove that parallel lines create congruent arcs in a circle.
How to construct parallel lines using three different methods.
How to form sentences with parallel structure.
How resistors in parallel affect current flow
How capacitors in parallel affect current flow.
How to define and label a line segment.
How to construct a perpendicular line at a point on a line.
How to use standard form of a line.
How to find the vector and parametric equations of a line when given two points on the line.
How to find the angle of inclination of a line.