interior angle of a regular 18-gon.
It is easier to calculate the exterior angle of a regular polygon of n-sides (n-gon) by the relation
exterior angle = 360/n
For a 18-gon, n=18, so exterior angle = 360/18=20 °
The value of each interior angle is therefore the supplement, or
Interior angle = 180-20=160 degrees.
Naming of a 9-gon
A polygon with 9 vertices is called a nonagon (in English) or enneagon (French ennéagone, but the English version is sometimes used)
You had a good start with the correct answer.
Exterior angle of a 15-gon
The exterior angle of a 15-gon can be calculated using the relation given in the first paragraph, namely
Exterior angle = 360/15=24 degrees
..... 40.5 ...............
Answer:
12f-5f²+6f+10f²= 10f²-5f²+12f+6f=5f²+18f
Answer:
Should be 4/7
Hope it helps have a good day!
Answer:
1. -3/4
2. 1
3. 0
4. 1/2
5. undefined
6. -22/15
Step-by-step explanation:
Hope this helped!
