Question

1.Circle is a _______.
a)Convex polygon
b)Concave polygon
c)Open curve
d)Closed curve

2.Formula to find number of of diagonals of an sides regular polygon is ____ .
a)
$\frac{n( n- 3)}{2}$
b)
$\frac{n(n - 1)}{2}$
c)
$\frac{n(n + 3)}{2}$
d)
$\frac{n(n - 2)}{2}$
​

Answer 1

Answer:

1- d { closed curve }

2-a{ The number of diagonals in a polygon

= n(n-3)/2, where n is the number of polygon sides}