The value of x in the given figure is.
60o
80o
90o
100o
Which of the following is a pentagon.
None of these
Number of side of a Decagon is.
7
8
9
10
Number of diagonals of a quadrilateral is.
1
2
3
4
A regular triangle is known as
Isosceles triagle
Equilateral triangle
Scalene triangle
A decagon has ____ diagonals.
12
20
35
38
A polygon with 7 sides are called.
Hexagon
Heptagon
Octagon
Decagon
In a polygon, if the line joining any two points lies inside the polygon, then the polygon is a
Convex polygon
Concave polygon
Irregular polygon
Sum of angles of a quadrilateral =
180o
360o
270o
Sum of exterior angles of a decagon is
540o
