Bell Work

(1) A student used the following argument to show why 2 lines are parallel: “since the consecutive angles are congruent, the lines are parallel.” Is the student correct in his argument? If not, how might he want to explain his argument?

(2) An architect building your dream house is asking you for ways that you can tell whether a line is parallel. Please explain in your own words or pictures, the 4 methods of proving that 2 lines are parallel that you learned yesterday.

**If you finish early, you may start looking at your study guide for assessment 5**

Objectives

WE WILL: Review transversal angle pair relationships so that we can: - Find missing angles- Prove that lines are parallel

Agenda

Bell Work Homework Questions- Go Over Proof Review Foldable Study Guide Work Time Exit Ticket

Parallel Or Not?

For the following picture, I will call on random students to tell me whether or not the lines are parallel? Please refer to one of the angle pairs in your answer.

Given the Picture:

Determine if the lines are parallel (and why) if:

(1) m 1=130°, m 8=130°∠ ∠

(2) m 2=60∠ °, m 6=60°∠

(3) m 5=40°, m 4=50°∠ ∠

(4) m 3=87°, m 5=93∠ ∠ °(5) m 4=100°, m 6=100°∠ ∠

(6) m 2=75°, m 5=100°∠ ∠

Foldable

Please take out your construction paper and follow the pictures and demonstrations

You’ll want to fold the foldable hot dog shape, but make sure the bottom side is about an inch longer than the top side.

The FRONT

The Inside Layout

Alternate Interior Angles: Zoomed In

Alternate Exterior Angles Zoomed In

Corresponding Angles Zoomed In

Consecutive Interior Angles: Zoomed In

The Back: More Tips

Study Guide

Please work independently and silently on your study guide.

Be sure that you are showing all work.

You are welcome to use your foldable, and notes from this week.

Exit Quiz

Find the values of the variables in the following picture given that the lines AB and CD are parallel.