A regular quadrilateral is known as
Parallelogram
Rectangle
Trapezium
Square
Sum of angles of a decagon is.
1440o
1420o
1260o
1280o
In a rhombus ______ sides are equal.
1
2
3
4
A decagon has ____ diagonals.
12
20
35
38
A polygon with 7 sides are called.
Hexagon
Heptagon
Octagon
Decagon
Sum of angles of a Hexagon is.
180o
360o
90o
270o
The value of x in the given figure is.
60o
80o
100o
In a polygon, if these exist even one line, which when joining two points of a polygon, does not lie inside the polygon completely, then that polygon is a
Convex polygon
Concave polygon
Irregular polygon
None of these
Find the number of sides of a regular polygon whose each exterior angles has a measure of 60o.
8
7
6
5
