The meaning and uses of atomic numbers.
How to define and label a line segment.
How to construct a perpendicular line at a point on a line.
How to multiply imaginary numbers.
How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines.
How to identify a specific electron in an atom's electron cloud using quantum numbers.
How to add and subtract complex numbers.
How to identify parallel lines, a line parallel to a plane, and two parallel planes.
How to use standard form of a line.
How to rationalize the denominator when dealing with an imaginary number.
How to define an imaginary number.
How to take the converse of the parallel lines theorem.
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.
How the number e is defined.