Because α varies directley to β
(k = constant)
α=7 when β=2
7= 2k
k=
so when α=21
21=
b
b= 6
A pentagon is a closed 5 sided polygon.
A regular polygon has all sides equal as well as all angles equal.
°The formula to find the sum of all angles of a polygon is = (n-2) ×180
So for a pentagon, n= 5
So the sum of all the angles must be (5-2)× 180= 3 × 180 = 540.
Now as it is a pentagon, it shall have 5 vertices.
So there are 5 angles in a pentagon and all must be equal.
Hence each interior angle must be 540/5 = 108
So for a regular polygon with 5 sides must have each interior angle = 108
Answer: I believe it's A.
Step-by-step explanation: if you divide each number by each other then you get a decimal number. But if you multiply the numbers then you get a whole number
