ICSE Board Practice

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ICSE Grade VIII - Polygons
Question 1
1.
Sum of the interior angles in a hexagon is
  • 730°
  • 750°
  • 720°
  • 735°
  • 725°
Question 2
2.
A polygon with 10 sides is called a
  • decagon
  • quadrilateral
  • hexagon
  • octagon
  • heptagon
Question 3
3.
The value of the interior angle in a regular polygon when the exterior angle is given
  • 180°- (exterior angle)
  • 360°- (exterior angle)
  • 90°+ (exterior angle)
  • 180°+ (exterior angle)
Question 4
4.
The number of diagonals in a regular polygon with n sides is
  • (
    n
    		) (
    n
    +
    2
    		)
    2
  • (
    n
    		) (
    n
    −
    3
    		)
    2
  • (
    n
    		) (
    n
    +
    3
    		)
    2
  • (
    n
    		) (
    n
    −
    2
    		)
    2
  • (
    n
    		) (
    n
    −
    1
    		)
    2
Question 5
5.
How many diagonals does a hexagon have?
  • 9
  • 8
  • 10
  • 7
  • 12
Question 6
6.
How many sides does a hexagon have?
  • 6
  • 9
  • 3
  • 7
  • 5
Question 7
7.
Sum of the interior angles in an octagon is
  • 1090°
  • 1110°
  • 1080°
  • 1095°
  • 1085°
Question 8
8.
Identify the figure below
  • triangle
  • hexagon
  • decagon
  • nonagon
  • angle
Question 9
9.
The value of each interior angle in an n-sided regular polygon is
  • [
    (2n - 4) x 180
    n
    		 ] °
  • [
    (2n - 4) x 90
    n
    		 ] °
  • (
    n
    360
    		 ) °
  • (
    360
    n
    		 ) °
Question 10
10.
A polygon with 8 sides is called an
  • decagon
  • quadrilateral
  • nonagon
  • octagon
  • hexagon