The expression for the number of segments drawn out of the n number of points in the circle is,
n² / 2 - n / 2
Substituting directly to the expression the number of points, n, which is equal to 8,
8² / 2 - 8 / 2 = 28
Thus, there are 28 segments that can be drawn from the points.
S = rθ
4.2 = 1*θ
The central angle (θ) is 4.2 radians.
2 1/4
2 1/3
These two fractions are both less than 2 1/2 but greater than 2