1. Geometry
1.4 It’s All About Angles

2. 1.4 Translating and Constructing Angles and Angle Bisectors
Objectives
Translate an angle on the coordinate plane
Copy or duplicate an angle by construction
Bisect an angle by construction
Needs
Ruler (Straightedge)
Compass
Protractor
Patty Paper

3. Problem 1: Translating an Angle
Together 1 and 2
Angle
Formed by two rays or segments
Share a common endpoint
Has two sides and a vertex
Symbol ∠ 𝑜𝑟 ∡
Naming an Angle
Must put the vertex in the middle
Pick a point on a side, Name the vertex, Pick a point on the other side

4. Problem 1: Translating an Angle
Collaborate 3 (8 Minutes)

5. Problem 1: Translating an Angle

6. Problem 1: Translating an Angle
Together 4-9

7. CONSTRUCTIONS Problem 2: Constructing an Angle
Use only a straightedge and a compass
Together Demo
Together 1-2

8. CONSTRUCTIONS Problem 3: Bisecting an Angle
Use only a straightedge and a compass
Demo Together with Patty Paper
Bisect Demo Together
Together 1-5

9. Formative Assessment Talk the Talk (pg. 60) Skills Practice 1.4
We will discuss the solutions tomorrow to start class
Skills Practice 1.4
Skip Vocabulary
Constructions 8 and 14 (Do these first)
Problems 1-6
Turn in drawing materials to the front on the way out. Each tool has a tray