A rectilinear figure of four sides is called _________
Penlagon
Hexagon
Triangle
Quadrilateral
If radius of a circle is r units; then its perimeter is
If the area of circle is 144cm2, then the area of its quadrant is ________
144cm2
12cm2
72cm2
36cm2
Number of sides of a decagon is
7
8
9
10
Perimeter of a semicircle is ________
2r units
The number of quadrants in a circle is
1
2
3
4
Quadrant of a circle is __________ of the circle.
one - half
one - fourth
one - third
two - third
A polygon in which at least one angle is more than 180o is called a ___________
Concave polygon
Convex polygon
irregular polygon
None of these
