Geometry 1.4 It’s All About Angles.

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Presentation transcript:

Geometry 1.4 It’s All About Angles

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

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

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

Problem 1: Translating an Angle

Problem 1: Translating an Angle Together 4-9

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

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

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