Parallel and Perpendicular Lines

Comic of the Day

Warm Up
Predict the type of slope for each of the lines (+,-,0,undefined), then calculate the value:

a) left line of diagram
b) right line of diagram
c) a different line, containing points A(-5,-3) and B(-2,3)

Announcements & Deadlines

• Homework (91 questions) for unit 5 due Thu, Mar 21 at 23:59
• Quiz 5 (32 questions, 90 min, 2 tries) opens Wed, Mar 20 and closes Thu, Mar 21 at 23:59
• Next unit exam (in class) Fri, Mar 22 (2 hours)

Today - Parallel and Perpendicular Lines
The following images came up in a Google search for "Parallel" or "Perpendicular".  Which is which?

Parallel and Perpendicular Lines in GeoGebra
Notes p. 164-166
Homework #43-52

For more information