1. What types of angles do you see in this pyramid?

2. In this lesson you will learn how to sort polygons into categories by observing their angles.

3. Let’s Review A polygon is a closed plane figure made up of line segments. Polygons Non-Polygons

4. An angle is a figure made from two rays that have the same endpoint. Angle

5. Angles are given special names depending on their size. Right ObtuseAcute Straight

6. Core Lesson We can classify and sort polygons by the type of angles that make it up. Only Right Right & Obtuse Acute & Obtuse Right & Acute Only Acute Only Obtuse

7. Sorting by angle types. Only RightOnly Acute Only Obtuse Acute and Right Acute and Obtuse Right and Obtuse

8. What types of angles do you see in this school? Obtuse and Right Angles

9. What types of angles do you see in this history textbook? Only Right Angles

10. What types of angles do you see in this sandwich? Right and Acute Angles

11. What types of angles do you see in this stop sign? Only Obtuse Angles

12. What types of angles do you see in this pyramid? Obtuse and Acute Angles

13. In this lesson you have learned how to sort polygons into categories by observing their angles.