1.
|
Name of regular polygon
|
Diagram
|
Size of each exterior angle
|
|
Square
|
 |
90°
|
|
Pentagon
|
 |
72°
|
|
Octagon
|
 |
45°
|
|
Decagon
|
 |
36°
|
2. Construction
3. a. A hexagon
b. Sum of exterior angles is 360°
c. (i) Each exterior angle is 360° ÷ 6 = 60°
(ii) Each interior angle is 180 − 60 = 120°
4. a. Sum of exterior angles is 360°
b. (i) Each exterior angle is 360° ÷ 7 = 51.4° to nearest tenth of a degree.
(ii) Each interior angle is 180 − 51.4 = 128.6°
5. 10 sides
