# 6-1 The Polygon Angle-Sum Theorems - PowerPoint PPT Presentation

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6-1 The Polygon Angle-Sum Theorems. *I CAN find the sum of the interior angles of a polygon. *I CAN also find the sum of the exterior angles of a polygon. *I CAN understand and use these terms: equilateral polygon, equiangular polygon, and regular polygon. triangle. quadrilateral. n. 17.

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6-1 The Polygon Angle-Sum Theorems

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## 6-1 The Polygon Angle-Sum Theorems

*I CAN find the sum of the interior angles of a polygon.

*I CAN also find the sum of the exterior angles of a polygon.

*I CAN understand and use these terms: equilateral polygon, equiangular polygon, and regular polygon.

triangle

n

17

15

2700

2700

9

9

7

9

140

140

4

m ےG

85

120

53

2

258

360

102

102

360

72

360

56

40°, because you can divide 360 by 9,

the number of sides in a nonagon.

### Objective Practices

• Lesson Check: pg. 356 #1-6

• Before you leave class today!

• HW: pg. 356 – 357 #7 – 41 odds