Mathematics
A polygon has n sides, the number of diagonals in this polygon is: 1. 1/2n(n - 1) 2. 1/2 x n(n - 2) 3. 1/2 x n(n - 3) 4. 1/2 x n(n - 4)
Related Questions
Each interior angle of a regular polygon is 165°. The number of sides in the polygon is :
12
24
20
6
Two angles of a quadrilateral are of 50° each and the other two angles are also equal. The measure of each of these equal angles is:
130°
310°
155°
none of these
The interior angle of a regular polygon is four times its exterior angle. The number of sides in the polygon is:
12
10
15
18
Two angles of a quadrilateral are 69° and 113°. If the other two angles are equal then each of equal angles is:
89°
178°
98°
none of these