1. Objective: To use angles to classify and measure polygons
20.3 Angles and Polygons
Objective: To use angles to classify and measure polygons

2. Polygon
A closed Plane figure made up of three or more line segments

3. Triangle

4. Quadrilateral

5. Pentagon

6. Hexagon

7. Octagon

8. Decagon

9. Regular and Irregular Polygons
Regular Polygon: Is a polygon with all sides of equal length and all angles of equal measure

10. triangle

11. Quadrilateral

12. Examples
C=35◦
A=130◦
C=26◦

13. Classwork Homework Txt book Page 436 Q 6 – 13 and Q 20 – 23
Pw Pg 106 Q 1 – 6 and Q 11 – 14