Checking and securing understanding of exterior angles

12 questions

1. An ___ angle is an angle formed inside a polygon by two of its edges.
2. Three of the interior angles of a quadrilateral are 80°, 90° and 45°. The size of the fourth interior angle is ___°.
3. The interior angles of a dodecagon (12 sides) sum to ___°.
4. Each interior angle of a regular octagon is ___°.
5. A regular polygon has interior angles of size 162°. The polygon has ___ sides.
6. Which interior angles are possible in a regular polygon?
7. An ___ angle is an angle on the outside of a polygon between an extension of an edge and the adjacent edge.
8. The exterior angles of any polygon sum to ___°.
9. An interior angle and its adjacent exterior angle sum to ___°.
10. The size of each exterior angle of a regular pentagon is ___°.
11. A regular polygon has exterior angles of 40°. The polygon has ___ sides.
12. Which of these exterior angles are possible for a regular polygon?

License: OGL