ICSE Board Practice

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ICSE Grade VIII - Polygons
Question 1
1.
The number of diagonals in a regular polygon with n sides is
  • (
    n
    		) (
    n
    +
    3
    		)
    2
  • (
    n
    		) (
    n
    +
    2
    		)
    2
  • (
    n
    		) (
    n
    −
    3
    		)
    2
  • (
    n
    		) (
    n
    −
    2
    		)
    2
  • (
    n
    		) (
    n
    −
    1
    		)
    2
Question 2
2.
How many diagonals does a decagon have?
  • 33
  • 37
  • 34
  • 36
  • 35
Question 3
3.
Identify the figure below
  • angle
  • parallelogram
  • triangle
  • trapezium
  • circle
Question 4
4.
Sum of the interior angles in a nonagon is
  • 1260°
  • 1270°
  • 1290°
  • 1265°
  • 1275°
Question 5
5.
How many sides does a decagon have?
  • 10
  • 8
  • 13
  • 11
  • 9
Question 6
6.
How many sides does a nonagon have?
  • 9
  • 6
  • 10
  • 8
  • 12
Question 7
7.
Identify the figure below
  • angle
  • hexagon
  • triangle
  • quadrilateral
  • heptagon
Question 8
8.
A polygon with 3 sides is called a
  • decagon
  • hexagon
  • pentagon
  • octagon
  • triangle
Question 9
9.
Sum of the interior angles in a quadrilateral is
  • 365°
  • 370°
  • 390°
  • 375°
  • 360°
Question 10
10.
A polygon with 5 sides is called a
  • decagon
  • pentagon
  • quadrilateral
  • heptagon
  • hexagon