CPCTC  a way to remember 'Corresponding Parts of Congruent Triangles are Congruent'
Math Open Reference

Definition of a ray when the defining points are on the coordinate plane
Math Open Reference

A method for finding the distance from a point to a vertical or horizontal line in coordinate geometry
Math Open Reference

A method for finding the distance from a point to a line in coordinate geometry using trigonometry
Math Open Reference

A method for finding the distance from a point to a line in coordinate geometry using two line equations
Math Open Reference

Three methods are discussed for finding the distance from a point to a line in coordinate geometry
Math Open Reference

The coordinate plane defined with description of x,y axis, quadrants, origin.
Math Open Reference

How to determine if lines are parallel in coordinate geometry
Math Open Reference

Introduction to the concept of lines in coordinate geometry.
Math Open Reference

Definition of a line when the defining points are on the coordinate plane
Math Open Reference
