EduSahara™ Worksheet

Question 1

1.

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

(i)

(

n

) (

n

+

3

)

2
(ii)

(

n

) (

n

−

1

)

2
(iii)

(

n

) (

n

+

2

)

2
(iv)

(

n

) (

n

−

3

)

2
(v)

(

n

) (

n

−

2

)

2

Question 2

2.

How many sides does a decagon have?

(i)

7
(ii)

12
(iii)

9
(iv)

10
(v)

11

Question 3

3.

Sum of the interior angles in a heptagon is

(i)

930°
(ii)

900°
(iii)

915°
(iv)

905°
(v)

910°

Question 4

4.

How many sides does a pentagon have?

(i)

3
(ii)

6
(iii)

7
(iv)

4
(v)

5

Question 5

5.

How many sides does an octagon have?

(i)

9
(ii)

7
(iii)

8
(iv)

11
(v)

6

Question 6

6.

Identify the figure below

(i)

pentagon
(ii)

hexagon
(iii)

triangle
(iv)

octagon
(v)

nonagon

Question 7

7.

Sum of the interior angles in a decagon is

(i)

1455°
(ii)

1470°
(iii)

1440°
(iv)

1450°
(v)

1445°

Question 8

8.

How many sides does a quadrilateral have?

(i)

1
(ii)

3
(iii)

4
(iv)

5
(v)

7

Question 9

9.

Sum of the interior angles in a triangle is

(i)

210°
(ii)

195°
(iii)

185°
(iv)

190°
(v)

180°

Question 10

10.

Identify the figure below

(i)

decagon
(ii)

hexagon
(iii)

quadrilateral
(iv)

triangle
(v)

pentagon

Question 11

11.

How many diagonals does a decagon have?

(i)

36
(ii)

34
(iii)

38
(iv)

35
(v)

32

Question 12

12.

Sum of the interior angles in an octagon is

(i)

1095°
(ii)

1110°
(iii)

1090°
(iv)

1085°
(v)

1080°

Question 13

13.

How many diagonals does a pentagon have?

(i)

8
(ii)

4
(iii)

6
(iv)

5
(v)

3

Question 14

14.

Sum of the interior angles in a hexagon is

(i)

720°
(ii)

730°
(iii)

725°
(iv)

735°
(v)

750°

Question 15

15.

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

(i)

360°- (exterior angle)
(ii)

90°+ (exterior angle)
(iii)

180°- (exterior angle)
(iv)

180°+ (exterior angle)

Question 16

16.

How many sides does a heptagon have?

(i)

6
(ii)

9
(iii)

5
(iv)

7
(v)

8

Question 17

17.

Identify the figure below

(i)

pentagon
(ii)

angle
(iii)

hexagon
(iv)

triangle
(v)

heptagon

Question 18

18.

How many diagonals does a quadrilateral have?

(i)

2
(ii)

4
(iii)

1
(iv)

0
(v)

3

Question 19

19.

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

(i)

[
(2n - 4) x 90
n
] °
(ii)

[
(2n - 4) x 180
n
] °
(iii)

(
360
n
) °
(iv)

(
n
360
) °

Question 20

20.

Find the number of sides in a regular polygon if each
exterior
angle is
8°

(i)

43
(ii)

48
(iii)

45
(iv)

46
(v)

44

Question 21

21.

How many diagonals does a triangle have?

(i)

3
(ii)

1
(iii)

0
(iv)

4
(v)

2

Question 22

22.

Sum of the interior angles in a pentagon is

(i)

570°
(ii)

555°
(iii)

545°
(iv)

540°
(v)

550°

Question 23

23.

How many diagonals does a nonagon have?

(i)

24
(ii)

27
(iii)

29
(iv)

28
(v)

26

Question 24

24.

A polygon with 10 sides is called a

(i)

hexagon
(ii)

octagon
(iii)

triangle
(iv)

heptagon
(v)

decagon

Question 25

25.

Sum of the interior angles in a quadrilateral is

(i)

365°
(ii)

390°
(iii)

360°
(iv)

370°
(v)

375°

Assignment Key