EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Triangles and Its Properties
Grade : SSC Grade VII
License : Non Commercial Use
Question
1
1.
In below given figure, find ∠IFG
(i)
95.12°
(ii)
94.12°
(iii)
92.12°
(iv)
96.12°
(v)
93.12°
Question
2
2.
In the following figure AB ∥ DC, find the values of x and y.
(i)
x
=
40°
,
y
=
100°
(ii)
x
=
41°
,
y
=
101°
(iii)
x
=
38°
,
y
=
98°
(iv)
x
=
39°
,
y
=
99°
(v)
x
=
42°
,
y
=
102°
Question
3
3.
Which of the following are measures of an obtuse angled triangle ?
(i)
∠N = 45° , ∠O = 90° , ∠P = 45°
(ii)
∠N = 122.01° , ∠O = 35.32° , ∠P = 22.67°
(iii)
∠N = 53.13° , ∠O = 67.38° , ∠P = 59.49°
(iv)
∠N = 75.31° , ∠O = 40.16° , ∠P = 64.53°
(v)
∠N = 35.54° , ∠O = 90° , ∠P = 54.46°
Question
4
4.
Which of the following are measures of an isosceles right angled triangle ?
(i)
∠A = 69.07° , ∠B = 69.08° , ∠C = 41.85°
(ii)
∠A = 60° , ∠B = 60° , ∠C = 60°
(iii)
∠A = 45° , ∠B = 90° , ∠C = 45°
(iv)
∠A = 45.21° , ∠B = 83.47° , ∠C = 51.32°
(v)
∠A = 109.08° , ∠B = 33.95° , ∠C = 36.97°
Question
5
5.
Find the unknown angles in the following figure
(i)
A
=
41°
,
B
=
41°
(ii)
A
=
39°
,
B
=
39°
(iii)
A
=
40°
,
B
=
40°
(iv)
A
=
42°
,
B
=
42°
(v)
A
=
38°
,
B
=
38°
Question
6
6.
If all the three angles of a triangle are of the same measure, find the measure of each of the angles.
(i)
62°
(ii)
61°
(iii)
58°
(iv)
60°
(v)
59°
Question
7
7.
Which of the following are measures of a scalene triangle ?
(i)
BC = 15 cm , CD = 10 cm , DB = 14 cm
(ii)
BC = 12 cm , CD = 13 cm , DB = 12 cm
(iii)
BC = 14 cm , CD = 14 cm , DB = 19.8 cm
(iv)
BC = 15 cm , CD = 15 cm , DB = 15 cm
(v)
BC = 11 cm , CD = 12 cm , DB = 11 cm
Question
8
8.
In the given figure, if DG = HD, find the values of x , y , z and t
(i)
x =43.5°, y =24.15°, z =23.79° , t =112.75°
(ii)
x =43.5°, y =26.15°, z =24.79° , t =111.75°
(iii)
x =43.5°, y =22.15°, z =20.79° , t =111.75°
(iv)
x =43.5°, y =24.15°, z =21.79° , t =110.75°
(v)
x =43.5°, y =24.15°, z =22.79° , t =111.75°
Question
9
9.
The vertical angle of an isosceles triangle is twice the sum of its base angles. Find each angle of the triangle.
(i)
A
=
122°
,
B
=
30°
,
C
=
28°
(ii)
A
=
120°
,
B
=
28°
,
C
=
32°
(iii)
A
=
118°
,
B
=
30°
,
C
=
32°
(iv)
A
=
120°
,
B
=
30°
,
C
=
30°
(v)
A
=
118°
,
B
=
32°
,
C
=
30°
Question
10
10.
In the given figure , if LI ⟂ JK and ∠IJL = 50.35°, find ∠LKI
(i)
62.56°
(ii)
64.56°
(iii)
61.56°
(iv)
63.56°
(v)
65.56°
Question
11
11.
In the given figure, calculate the value of x.
(i)
x
=
141°
(ii)
x
=
140°
(iii)
x
=
144°
(iv)
x
=
143°
(v)
x
=
142°
Question
12
12.
Which of the following are measures of an isosceles right angled triangle ?
(i)
LM = 13 cm , MN = 20 cm , NL = 11 cm
(ii)
LM = 11 cm , MN = 11 cm , NL = 11 cm
(iii)
LM = 14 cm , MN = 15 cm , NL = 11 cm
(iv)
LM = 14 cm , MN = 14 cm , NL = 19.8 cm
(v)
LM = 12 cm , MN = 14 cm , NL = 15 cm
Question
13
13.
In the given figure, calculate the value of x.
(i)
x
=
23.5°
(ii)
x
=
21.5°
(iii)
x
=
24.5°
(iv)
x
=
22.5°
(v)
x
=
20.5°
Question
14
14.
Find the value of x in the given figure.
(i)
x
=
18°
(ii)
x
=
17°
(iii)
x
=
19°
(iv)
x
=
20°
(v)
x
=
16°
Question
15
15.
In the given figure, find the values of x ,y and z.
(i)
x
=
44°
,
y
=
32°
,
z
=
80°
(ii)
x
=
44°
,
y
=
34°
,
z
=
78°
(iii)
x
=
42°
,
y
=
34°
,
z
=
80°
(iv)
x
=
42°
,
y
=
36°
,
z
=
78°
(v)
x
=
46°
,
y
=
34°
,
z
=
76°
Question
16
16.
The altitude corresponding to the side
EF
(i)
GJ
(ii)
EI
(iii)
EF
(iv)
FI
(v)
EH
Question
17
17.
In the following figure, one side of a triangle has been produced. Find all the angles of the triangle
(i)
D
=
55°
,
E
=
40°
,
F
=
85°
(ii)
D
=
53°
,
E
=
42°
,
F
=
85°
(iii)
D
=
57°
,
E
=
40°
,
F
=
83°
(iv)
D
=
53°
,
E
=
40°
,
F
=
87°
(v)
D
=
55°
,
E
=
38°
,
F
=
87°
Question
18
18.
In the given figure, find ∠OMN
(i)
106°
(ii)
108°
(iii)
107°
(iv)
105°
(v)
109°
Question
19
19.
Find the measure of each of the two equal angles of an isosceles right-angled triangle.
(i)
46°
(ii)
47°
(iii)
45°
(iv)
43°
(v)
44°
Question
20
20.
Consider the following figure. State which of the following statements are true
a)
RP
=
PQ
b)
RP
≠
PQ
c)
PQ
≠
QR
d)
PQ
=
QR
e)
QR
≠
RP
f)
QR
=
RP
(i)
{b,c,e}
(ii)
{f,a,e}
(iii)
{d,c}
(iv)
{a,b}
(v)
{d,b,c}
Question
21
21.
Find the unknown marked angles in the following figure
(i)
x
=
111°
,
y
=
40°
(ii)
x
=
108°
,
y
=
37°
(iii)
x
=
107°
,
y
=
36°
(iv)
x
=
109°
,
y
=
38°
(v)
x
=
110°
,
y
=
39°
Question
22
22.
Which of the following are measures of an equilateral triangle ?
(i)
GH = 15 cm , HI = 11 cm , IG = 13 cm
(ii)
GH = 11 cm , HI = 11 cm , IG = 11 cm
(iii)
GH = 10 cm , HI = 12 cm , IG = 10 cm
(iv)
GH = 10 cm , HI = 10 cm , IG = 14.14 cm
(v)
GH = 12 cm , HI = 10 cm , IG = 15.62 cm
Question
23
23.
Which of the following are measures of an equilateral triangle ?
(i)
∠A = 76.33° , ∠B = 55.3° , ∠C = 48.37°
(ii)
∠A = 49.4° , ∠B = 90° , ∠C = 40.6°
(iii)
∠A = 47.16° , ∠B = 66.42° , ∠C = 66.42°
(iv)
∠A = 60° , ∠B = 60° , ∠C = 60°
(v)
∠A = 45° , ∠B = 90° , ∠C = 45°
Question
24
24.
The median corresponding to the side
BC
(i)
BE
(ii)
AB
(iii)
CF
(iv)
AD
(v)
AE
Question
25
25.
In △JKL, if ∠J = 53° and ∠K = 68°, find the measure of ∠L
(i)
L
=
57°
(ii)
L
=
58°
(iii)
L
=
61°
(iv)
L
=
59°
(v)
L
=
60°
Assignment Key
1) (ii)
2) (i)
3) (ii)
4) (iii)
5) (iii)
6) (iv)
7) (i)
8) (v)
9) (iv)
10) (iv)
11) (v)
12) (iv)
13) (iv)
14) (i)
15) (ii)
16) (i)
17) (i)
18) (iii)
19) (iii)
20) (i)
21) (iv)
22) (ii)
23) (iv)
24) (iv)
25) (iv)