How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines.
How to determine whether two lines in space are parallel or perpendicular.
How to compute the sum of two vectors or the product of a scalar and a vector.
How to identify parallel lines, a line parallel to a plane, and two parallel planes.
Understanding the differences between vectors and scalar quantities.
How to write the vector equation of a line.
How to find additive and multiplicative inverses.
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.
Vocabulary of multiples and least common multiples
How to take the converse of the parallel lines theorem.
How to multiply matrices.
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.
How to use point-slope form of a line.