Objectives

PA Standards

Introduction to New Material

Define perpendicular lines (what they are, how to notate it on a diagram, and the notation in a statement).

Define a transversal (any line which cuts across a set of lines) but note that it's usually talked about only in terms of parallel lines. Describe what they are, how to notate them on a diagram, and how to notate it in a statement.

Given a pair of lines cut by a transversal, define the corresponding angles, the alternate interior angles, and the alternate exterior angles.

Note that when parallel lines are cut by transversals, the corresponding angles are congruent. (Add linear pairs and vertical angles and you know everything from one angle.)

Same for alternate interior angles and alternate exterior angles.

Classwork

Students should do the problems on pages 31, 32, and 33.