Susan Chaffee
Geometry Section 3.2 Spring 2009
Lesson 1 – Section 3.2
Unit: Chapter 3 Parallel and Perpendicular Lines
Lesson: Section 3.8 and Section 3.3
Goals: To construct parallel and perpendicular lines through a point or with a certain length
Lesson Objectives:
Enduring Understanding:
Materials and/or Special Notes:
Lecture materials (computer):
Prior Knowledge:
Write on the board:
Section 3.8…Constructing Parallel and Perpendicular Lines
Section 3.3…Parallel and Perpendicular Lines
Motivation:
Review:
Recall constructions from section 1.7:

Perpendicular bisector, congruent segments and angles, angle bisector.
Lesson Activites :
1) See worksheet. construct:

parallel line through a point

quadritlateral with sides of determined length and 2 sides parallel.

perpendicular to a line through a given point on the line.

perpendicular to a line and through a point not on the line.

rectangle with given lengths for the sides.
2) Lesson 3.3

Show carpenters tools. how do we make our walls and ceiling straight. Have you ever thought about
what might happen if you construct a ceiling that is not parallel to the floor.