Angles, Lines, and Shapes367

• LESSON 1

• Investigating Angles368

  Kinds of Angles

  Homework

• LESSON 2

• Lines373

  TIMSville

  Line Segments and Rectangles

  Homework

• LESSON 3

• Turning Through Angles378

  Angles and Degrees

• LESSON 4

• Measuring and Estimating Angles384

  Estimating Angles

  Using a Protractor

  Drawing Angles

  Homework

• LESSON 5

• Angles in Polygons396

  What is a Polygon?

  Adding the Angles of a Triangle

  Homework

• LESSON 6

• Workshop: Angles and Lines405

  Geometry in Quilts

• LESSON 7

• Symmetry407

  Line Symmetry

  Are These Right?

  Turn Symmetry

• LESSON 8

• Slides, Flips, and Turns412

  Flips, Slides, and Turns of Shapes

  Congruence

  Homework

• LESSON 9

• Describing and Analyzing Shapes419

  Homework

• LESSON 10

• Classifying Shapes422

  Triangle Riddles

  Sorting Polygons

  Homework

• LESSON 11

• Workshop: Shapes and Properties425

  Describe and Analyze Shapes

  Slides, Flips, and Turns in Escher Drawings

  Journey to Flatopia

  Dimensions

  Journey to Flatopia