|
POLYGON |
# of vertices |
# of sides |
# of interior angles |
# of diagonals from one vertex |
# of triangles formed by diagonals from one vertex |
angle sum |
measure of each angle if the polygon is regular |
|
triangle |
3 |
3 |
3 |
0 |
1 |
180 |
60 |
|
quadrilateral |
4 |
4 |
4 |
1 |
2 |
180 * 2 = 360 |
90 |
|
pentagon |
5 |
5 |
5 |
2 |
3 |
180 * 3 = 540 |
108 |
|
hexagon |
6 |
6 |
6 |
3 |
4 |
180 * 4 = 720 |
120 |
|
heptagon |
7 |
7 |
7 |
4 |
5 |
180 * 5 = 900 |
|
|
octagon |
8 |
8 |
8 |
5 |
6 |
180 * 6 = 1080 |
135 |
|
nonagon |
9 |
9 |
9 |
6 |
7 |
180 * 7 = 1260 |
140 |
|
decagon |
10 |
10 |
10 |
7 |
8 |
180 * 8 = 1440 |
144 |
|
hendecagon |
11 |
11 |
11 |
8 |
9 |
180 * 9 = 1620 |
|
dodecagon |
12 |
12 |
12 |
9 |
10 |
180 * 10 = 1800 |
150 |
n-gon |
n |
n |
n |
n-3 |
n-2 |
180(n-2) |
|
