Module 5
1. Module 5
1.21. Lesson 5
Module 5: Angles
Lesson 5: Parallel and Perpendicular Lines
Focus
Canadian football originated in Montréal in 1865 and was then similar to rugby. Over the last 150 years, football has evolved into the game that has become, for many, a national pastime! Which is your favourite Canadian Football League (CFL) team—the Saskatchewan Roughriders, the BC Lions, or maybe the Montréal Alouettes? Or maybe another team?
The football field in the illustration is the league’s standard. The field is 110 yd long and 65 yd wide, and the end zones are 20 yd deep. The yard lines, marked as a series of lines 5 yd apart, are all parallel to each other. Each of those yard lines is also perpendicular—that is, at 90°—to the sidelines. You probably noticed a series of hash marks set in 24 yards from the sidelines and perpendicular to the white yard lines. Do the two sets of hash marks run parallel to each other? How do you know?
Lesson Questions
In this lesson you will explore these questions:
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How are parallel and perpendicular lines identified?
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How can the relationship among angles formed when a line intersects parallel lines be used to solve problems?
Assessment
You will complete the Lesson 5 Assignment Booklet for assessment. Download the Lesson 5 Assignment Booklet and save it in your course folder now. You will receive instructions on how to complete the Assignment Booklet later in the lesson. You will alsobe prompted to start working on the Unit 3 Project.
Remember to save all activities, including those that are not part of the Assignment, in your course folder.
Required Materials and Equipment
For this lesson you will need the following supplies:
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a protractor
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scissors
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several blank sheets of paper
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a straight edge or ruler