Identifying Angles

Lesson Prep

Lesson Details

• Duration: 50 minutes

• Learning Goal: Explore what it means for angles to be congruent and introduce angle labeling.

Prework

• Cut out class sets of cards for card sort activity

• Make sure you have a class set of compasses for constructions

• Read Dan Meyer's Pick a Point to prepare for game

Answer Keys

• Link to Answer Keys

Classwork

• Estimation – 220 Rotation

• Warm Up / Card Matching (taken from New Visions)

  • Cards

• Pick a Point

• Identifying Angles Handout

• Spiraling Practice

1:1 Devices Version

• Warm Up / Card Matching with paper

• Pear Deck for the rest

Standards

Common Core

• HSG.CO.D.12 – Make formal geometric constructions with a variety of tools and methods (compass and straightedge, string, reflective devices, paper folding, dynamic geometric software, etc.). Copying a segment; copying an angle; bisecting a segment; bisecting an angle; constructing perpendicular lines, including the perpendicular bisector of a line segment; and constructing a line parallel to a given line through a point not on the line.

TEKS

• G.5(B) – construct congruent segments, congruent angles, a segment bisector, an angle bisector, perpendicular lines, the perpendicular bisector of a line segment, and a line parallel to a given line through a point not on a line using a compass and a straightedge