EduSahara™ Worksheet

Question 1

1.

How many diagonals does a triangle have?

(i)

3
(ii)

1
(iii)

0
(iv)

2
(v)

4

Question 2

2.

Identify the figure below

(i)

nonagon
(ii)

triangle
(iii)

circle
(iv)

octagon
(v)

decagon

Question 3

3.

Identify the figure below

(i)

circle
(ii)

rhombus
(iii)

trapezium
(iv)

parallelogram
(v)

rectangle

Question 4

4.

How many diagonals does an octagon have?

(i)

17
(ii)

20
(iii)

23
(iv)

19
(v)

21

Question 5

5.

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

(i)

(

n

) (

n

−

2

)

2
(ii)

(

n

) (

n

+

2

)

2
(iii)

(

n

) (

n

−

1

)

2
(iv)

(

n

) (

n

−

3

)

2
(v)

(

n

) (

n

+

3

)

2

Question 6

6.

Sum of the interior angles in an octagon is

(i)

1110°
(ii)

1090°
(iii)

1095°
(iv)

1085°
(v)

1080°

Question 7

7.

Identify the figure below

(i)

decagon
(ii)

circle
(iii)

nonagon
(iv)

triangle
(v)

quadrilateral

Question 8

8.

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

(i)

(
n
360
) °
(ii)

[
(2n - 4) x 180
n
] °
(iii)

(
360
n
) °
(iv)

[
(2n - 4) x 90
n
] °

Question 9

9.

How many diagonals does a quadrilateral have?

(i)

0
(ii)

4
(iii)

2
(iv)

3
(v)

1

Question 10

10.

Identify the figure below

(i)

angle
(ii)

rhombus
(iii)

parallelogram
(iv)

kite
(v)

square

Question 11

11.

Identify the figure below

(i)

rectangle
(ii)

parallelogram
(iii)

rhombus
(iv)

circle
(v)

angle

Question 12

12.

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

(i)

180°+ (exterior angle)
(ii)

180°- (exterior angle)
(iii)

360°- (exterior angle)
(iv)

90°+ (exterior angle)

Question 13

13.

Find the number of sides in a regular polygon if each
interior
angle is
120°

(i)

7
(ii)

3
(iii)

6
(iv)

8
(v)

5

Question 14

14.

Sum of the interior angles in a triangle is

(i)

195°
(ii)

210°
(iii)

180°
(iv)

185°
(v)

190°

Question 15

15.

How many diagonals does a nonagon have?

(i)

28
(ii)

29
(iii)

26
(iv)

27
(v)

24

Question 16

16.

How many diagonals does a pentagon have?

(i)

8
(ii)

4
(iii)

5
(iv)

6
(v)

2

Question 17

17.

Identify the figure below

(i)

parallelogram
(ii)

trapezium
(iii)

rectangle
(iv)

quadrilateral
(v)

square

Question 18

18.

Sum of the interior angles in a decagon is

(i)

1450°
(ii)

1470°
(iii)

1445°
(iv)

1440°
(v)

1455°

Question 19

19.

Identify the figure below

(i)

heptagon
(ii)

octagon
(iii)

angle
(iv)

pentagon
(v)

triangle

Question 20

20.

Three angles of quadrilateral measure 70.47°, 111.8° and 56.25° respectively. Find the measure of the fourth angle

(i)

120.48°
(ii)

121.48°
(iii)

119.48°
(iv)

123.48°
(v)

122.48°

Question 21

21.

Sum of the interior angles in a hexagon is

(i)

735°
(ii)

730°
(iii)

720°
(iv)

725°
(v)

750°

Question 22

22.

Sum of the interior angles in a heptagon is

(i)

915°
(ii)

900°
(iii)

910°
(iv)

905°
(v)

930°

Question 23

23.

In the given two equilateral triangles, find ∠D + ∠F + ∠H + ∠E + ∠G + ∠I .

(i)

361°
(ii)

360°
(iii)

362°
(iv)

358°
(v)

359°

Question 24

24.

Two adjacent angles of a parallelogram FGHI are in the ratio 3 : 7. Find the measure of each of its angles.

(i)

F

=

52°

,

G

=

128°

,

H

=

53°

,

I

=

127°
(ii)

F

=

55°

,

G

=

125°

,

H

=

56°

,

I

=

124°
(iii)

F

=

56°

,

G

=

125°

,

H

=

52°

,

I

=

127°
(iv)

F

=

53°

,

G

=

124°

,

H

=

55°

,

I

=

128°
(v)

F

=

54°

,

G

=

126°

,

H

=

54°

,

I

=

126°

Question 25

25.

How many diagonals does a heptagon have?

(i)

16
(ii)

14
(iii)

13
(iv)

11
(v)

15

Assignment Key