EduSahara™ Worksheet

Question 1

1.

Sum of the interior angles in an octagon is

(i)

1095°
(ii)

1080°
(iii)

1090°
(iv)

1085°
(v)

1110°

Question 2

2.

The value of each interior angle in an n-sided regular polygon is

(i)

[
(2n - 4) x 90
n
] °
(ii)

(
360
n
) °
(iii)

[
(2n - 4) x 180
n
] °
(iv)

(
n
360
) °

Question 3

3.

How many diagonals does a hexagon have?

(i)

6
(ii)

12
(iii)

9
(iv)

8
(v)

10

Question 4

4.

How many diagonals does a decagon have?

(i)

32
(ii)

38
(iii)

36
(iv)

35
(v)

34

Question 5

5.

The number of diagonals in a regular polygon with n sides is

(i)

(

n

) (

n

−

3

)

2
(ii)

(

n

) (

n

+

2

)

2
(iii)

(

n

) (

n

+

3

)

2
(iv)

(

n

) (

n

−

1

)

2
(v)

(

n

) (

n

−

2

)

2

Question 6

6.

Find the number of sides in a regular polygon if each
exterior
angle is
30°

(i)

11
(ii)

12
(iii)

15
(iv)

13
(v)

10

Question 7

7.

How many diagonals does a nonagon have?

(i)

29
(ii)

28
(iii)

24
(iv)

26
(v)

27

Question 8

8.

Sum of the interior angles in a triangle is

(i)

180°
(ii)

210°
(iii)

195°
(iv)

185°
(v)

190°

Question 9

9.

How many diagonals does an octagon have?

(i)

17
(ii)

19
(iii)

22
(iv)

20
(v)

21

Question 10

10.

The value of the interior angle in a regular polygon when the exterior angle is given

(i)

90°+ (exterior angle)
(ii)

180°+ (exterior angle)
(iii)

180°- (exterior angle)
(iv)

360°- (exterior angle)

Question 11

11.

Identify the figure below

(i)

octagon
(ii)

nonagon
(iii)

angle
(iv)

triangle
(v)

heptagon

Question 12

12.

How many sides does a quadrilateral have?

(i)

4
(ii)

5
(iii)

7
(iv)

3
(v)

2

Question 13

13.

Sum of the interior angles in a decagon is

(i)

1455°
(ii)

1450°
(iii)

1470°
(iv)

1445°
(v)

1440°

Question 14

14.

Sum of the interior angles in a hexagon is

(i)

730°
(ii)

725°
(iii)

735°
(iv)

750°
(v)

720°

Question 15

15.

A polygon with 3 sides is called a

(i)

quadrilateral
(ii)

pentagon
(iii)

triangle
(iv)

decagon
(v)

hexagon

Question 16

16.

The value of the exterior angle in a regular polygon when the interior angle is given

(i)

90°+ (interior angle)
(ii)

360°- (interior angle)
(iii)

180°- (interior angle)
(iv)

180°+ (interior angle)

Question 17

17.

A polygon with 5 sides is called a

(i)

octagon
(ii)

pentagon
(iii)

triangle
(iv)

heptagon
(v)

decagon

Question 18

18.

A polygon with 4 sides is called a

(i)

hexagon
(ii)

triangle
(iii)

heptagon
(iv)

quadrilateral
(v)

octagon

Question 19

19.

How many sides does a heptagon have?

(i)

8
(ii)

7
(iii)

10
(iv)

6
(v)

4

Question 20

20.

How many sides does a nonagon have?

(i)

7
(ii)

9
(iii)

11
(iv)

10
(v)

8

Question 21

21.

Identify the figure below

(i)

hexagon
(ii)

nonagon
(iii)

octagon
(iv)

pentagon
(v)

circle

Question 22

22.

How many diagonals does a quadrilateral have?

(i)

0
(ii)

1
(iii)

4
(iv)

3
(v)

2

Question 23

23.

How many sides does an octagon have?

(i)

7
(ii)

9
(iii)

5
(iv)

11
(v)

8

Question 24

24.

Identify the figure below

(i)

heptagon
(ii)

hexagon
(iii)

pentagon
(iv)

angle
(v)

octagon

Question 25

25.

Sum of the interior angles in a nonagon is

(i)

1260°
(ii)

1290°
(iii)

1265°
(iv)

1275°
(v)

1270°

Assignment Key