Angle sums of polygons

1. 1.
   What is each exterior angle of a regular pentagon, in degrees?
2. 2.
   What is the sum of the interior angles of a decagon, in degrees?
3. 3.
   What is the sum of the interior angles of a octagon, in degrees?
4. 4.
   What is the sum of the interior angles of a triangle, in degrees?
5. 5.
   What is each interior angle of a regular dodecagon, in degrees?
6. 6.
   What is the sum of the interior angles of a quadrilateral, in degrees?
7. 7.
   Three angles of a quadrilateral are 73°, 97° and 85°. What is the fourth angle, in degrees?
8. 8.
   Three angles of a quadrilateral are 105°, 120° and 41°. What is the fourth angle, in degrees?
9. 9.
   What is each exterior angle of a regular octagon, in degrees?
10. 10.
    What is each interior angle of a regular decagon, in degrees?
11. 11.
    Three angles of a quadrilateral are 111°, 71° and 86°. What is the fourth angle, in degrees?
12. 12.
    What is each interior angle of a regular nonagon, in degrees?
13. 13.
    Three angles of a quadrilateral are 72°, 65° and 42°. What is the fourth angle, in degrees?
14. 14.
    What is the sum of the interior angles of a hexagon, in degrees?
15. 15.
    What is the sum of the interior angles of a dodecagon, in degrees?
16. 16.
    Three angles of a quadrilateral are 109°, 129° and 43°. What is the fourth angle, in degrees?
17. 17.
    What is each exterior angle of a regular quadrilateral, in degrees?
18. 18.
    What is each exterior angle of a regular decagon, in degrees?
19. 19.
    What is each interior angle of a regular pentagon, in degrees?
20. 20.
    Three angles of a quadrilateral are 59°, 101° and 58°. What is the fourth angle, in degrees?

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