## Lesson #9 - Intersecting lines, triangle angle measure

Lesson plan
Angle rules handout
Triangle angle cutout for in-class
In-class exercise - page 1
In-class exercise - page 2
Homework - page 1
Homework - page 2
Homework - page 3
Practice competition instructions
Practice competition #1: Measurement
Practice competition #2: Geometry (page 1)
Practice competition #2: Geometry (page 2)
Answers

Note: Practice competitions are meant for use in a second one-hour class
on a weekly basis. They reinforce recently learned concepts and give
students practice working in teams.