This video gives more detail about the mathematical principles presented in Perpendicular Lines.
This video shows how to work step-by-step through one or more of the examples in Perpendicular Lines.
Ten question quiz. Students give a real world example of perpendicular lines. Identify perpendicular lines, right angles, and non-right angles in diagrams. Students solve for x in a right angle. Students determine if statements are true or false and give justification.
A list of student-submitted discussion questions for Perpendicular Lines.
When playing the violin, why does your bow have to be at a right angle to the strings?
Find out how builders and carpenters create perfectly perpendicular lines and square angles in their work.
This study guide is an overview of notation and basic postulates/theorems for parallel and perpendicular lines.