EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Lines and Angles
Grade : CBSE Grade IX
License : Non Commercial Use
Question
1
1.
In the following figure, one side of a triangle has been produced. Find the values of x and y.
(i)
x
=
59°
,
y
=
74°
(ii)
x
=
61°
,
y
=
76°
(iii)
x
=
60°
,
y
=
75°
(iv)
x
=
62°
,
y
=
77°
(v)
x
=
58°
,
y
=
73°
Question
2
2.
Consider the following figure
⟷
ZI
.
State which of the following statements are true?
a)
Z,I are points on the line segment
KL
b)
Z,I are end points of line segment
KL
c)
Z,K,X,I,L are points on the line
⟷
ZI
d)
X,L are end points of line segment
LZ
e)
Z,I are end points of line segment
ZI
(i)
{c,e}
(ii)
{b,e,c}
(iii)
{d,a,c}
(iv)
{a,c}
(v)
{b,e}
Question
3
3.
Which of the following is a zero angle?
(i)
285°
(ii)
0°
(iii)
360°
(iv)
169°
(v)
35°
Question
4
4.
Find the adjacent angles in the given figure
(i)
∠1 , ∠2 , ∠7 , ∠8
(ii)
∠3 , ∠5 ; ∠4 , ∠6
(iii)
∠1 , ∠2 ; ∠2 , ∠4 ; ∠4 , ∠3 ; ∠3 , ∠1 ; ∠5 , ∠6 ; ∠6 , ∠8 ; ∠8 , ∠7 ; ∠7 , ∠5
(iv)
∠3 , ∠6 ; ∠4 , ∠5
(v)
∠1 , ∠5 ; ∠2 , ∠6 ; ∠3 , ∠7 ; ∠4 , ∠8
Question
5
5.
The following angle represents
(i)
right angle
(ii)
reflex angle
(iii)
acute angle
(iv)
obtuse angle
(v)
zero angle
Question
6
6.
Which of the following figures represent an angle?
(i)
fig 2
(ii)
fig 3
(iii)
fig 4
(iv)
fig 5
(v)
fig 1
Question
7
7.
In the figure below, if
AB
=
11.60 cm
and
BC
=
7.00 cm
,find
AC
= ?
(i)
19.60 cm
(ii)
20.60 cm
(iii)
16.60 cm
(iv)
18.60 cm
(v)
17.60 cm
Question
8
8.
Find the interior angles in the given figure
(i)
∠3 , ∠5 ; ∠4 , ∠6
(ii)
∠1 , ∠5 ; ∠2 , ∠6 ; ∠3 , ∠7 ; ∠4 , ∠8
(iii)
∠1 , ∠2 , ∠7 , ∠8
(iv)
∠3 , ∠4 , ∠5 , ∠6
(v)
∠1 , ∠8 ; ∠2 , ∠7
Question
9
9.
Two lines meeting at a point and making an angle of 90° at the meeting point are called
(i)
parallel lines
(ii)
coplanar lines
(iii)
intersecting lines
(iv)
perpendicular lines
(v)
concurrent lines
Question
10
10.
In the given figure, calculate the value of x.
(i)
x
=
68.15°
(ii)
x
=
70.15°
(iii)
x
=
66.15°
(iv)
x
=
69.15°
(v)
x
=
67.15°
Question
11
11.
Two angles of a triangle measure 61° and 58° respectively. Find the measure of the third angle of the triangle
(i)
62°
(ii)
61°
(iii)
60°
(iv)
63°
(v)
59°
Question
12
12.
In the given figure, find ∠DEC
(i)
61°
(ii)
62°
(iii)
63°
(iv)
59°
(v)
60°
Question
13
13.
Find the angles of the triangle
(i)
F
=
58°
,
G
=
47°
,
H
=
75°
(ii)
F
=
58°
,
G
=
45°
,
H
=
77°
(iii)
F
=
62°
,
G
=
45°
,
H
=
73°
(iv)
F
=
60°
,
G
=
43°
,
H
=
77°
(v)
F
=
60°
,
G
=
45°
,
H
=
75°
Question
14
14.
Find the unknown angles in the following figure
(i)
D
=
54°
,
E
=
54°
(ii)
D
=
58°
,
E
=
58°
(iii)
D
=
56°
,
E
=
56°
(iv)
D
=
55°
,
E
=
55°
(v)
D
=
57°
,
E
=
57°
Question
15
15.
The following angle represents
(i)
obtuse angle
(ii)
zero angle
(iii)
acute angle
(iv)
complete angle
(v)
reflex angle
Question
16
16.
Find the exterior angles in the given figure
(i)
∠1 , ∠2 ; ∠2 , ∠4 ; ∠4 , ∠3 ; ∠3 , ∠1 ; ∠5 , ∠6 ; ∠6 , ∠8 ; ∠8 , ∠7 ; ∠7 , ∠5
(ii)
∠1 , ∠2 , ∠7 , ∠8
(iii)
∠1 , ∠5 ; ∠2 , ∠6 ; ∠3 , ∠7 ; ∠4 , ∠8
(iv)
∠1 , ∠8 ; ∠2 , ∠7
(v)
∠1 , ∠4 ; ∠2 , ∠3 ; ∠5 , ∠8 ; ∠6 , ∠7
Question
17
17.
In the given figure, calculate the value of x.
(i)
x
=
27°
(ii)
x
=
26°
(iii)
x
=
24°
(iv)
x
=
25°
(v)
x
=
23°
Question
18
18.
Calculate the value of x in the following figure
(i)
x
=
68.2°
(ii)
x
=
69.2°
(iii)
x
=
71.2°
(iv)
x
=
72.2°
(v)
x
=
70.2°
Question
19
19.
Find the value of 'f' in the following figure
(i)
125°
(ii)
135°
(iii)
150°
(iv)
130°
(v)
120°
Question
20
20.
In below given figure, find ∠HFJ
(i)
102.06°
(ii)
105.06°
(iii)
106.06°
(iv)
104.06°
(v)
103.06°
Question
21
21.
In the given figure, △GHI in which side HI has been produced to J. If ∠IGH = x° , ∠GHI = (1/2a)° , ∠HIG = (1/4a)° and ∠GIJ = (5/4a)°, find the values of a and x.
(i)
a
=
122°
,
x
=
92°
(ii)
a
=
120°
,
x
=
90°
(iii)
a
=
119°
,
x
=
89°
(iv)
a
=
121°
,
x
=
91°
(v)
a
=
118°
,
x
=
88°
Question
22
22.
In the given figure , if LI ⟂ JK and ∠IJL = 39.58°, find ∠KIL
(i)
35.97°
(ii)
33.97°
(iii)
34.97°
(iv)
36.97°
(v)
37.97°
Question
23
23.
The complementary angle of
36°
is
(i)
64°
(ii)
54°
(iii)
84°
(iv)
59°
(v)
69°
Question
24
24.
In the given figure, find the values of x and y
(i)
x
=
66.7°
,
y
=
48.84°
(ii)
x
=
64.7°
,
y
=
46.84°
(iii)
x
=
63.7°
,
y
=
45.84°
(iv)
x
=
67.7°
,
y
=
49.84°
(v)
x
=
65.7°
,
y
=
47.84°
Question
25
25.
A line that intersects two lines at two different points is called
(i)
parallel lines
(ii)
concurrent lines
(iii)
coplanar lines
(iv)
transversal
(v)
perpendicular lines
Assignment Key
1) (iii)
2) (i)
3) (ii)
4) (iii)
5) (v)
6) (ii)
7) (iv)
8) (iv)
9) (iv)
10) (i)
11) (ii)
12) (i)
13) (v)
14) (iii)
15) (iii)
16) (ii)
17) (iv)
18) (v)
19) (v)
20) (iv)
21) (ii)
22) (i)
23) (ii)
24) (v)
25) (iv)