How to define and label a line segment.
How to duplicate a line segment using a compass and straightedge.
How to derive the area of a segment formula.
How to prove two triangles are similar using a line parallel to a base.
How to find the length of tangent segments drawn to a circle from the same point.
How to construct a perpendicular line at a point on a line.
How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines.
How to identify parallel lines, a line parallel to a plane, and two parallel planes.
How to identify, define and label a midpoint.
How to take the converse of the parallel lines theorem.
How to find the shortest distance between a point and a line.
How to describe and label point, line, and plane. How to define coplanar and collinear.
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 define a median in a triangle.
How to define a midsegment in a triangle.
How to define and identify vertical angles.
How to define corresponding angles and their special properties.
How to derive the equation for the distance between two points using the Pythagorean Theorem.
How to identify a segment from the vertex angle in an isosceles triangle to the opposite side.