EduSahara™ Worksheet
Name : Chapter Based Worksheet
Chapter : Triangles
Grade : ICSE Grade VIII
License : Non Commercial Use
Question
1
1.
Calculate the value of the lettered angle in the following figure
(i)
x
=
45°
(ii)
x
=
44°
(iii)
x
=
46°
(iv)
x
=
47°
(v)
x
=
43°
Question
2
2.
Find the value of x in the given figure.
(i)
x
=
26°
(ii)
x
=
25°
(iii)
x
=
23°
(iv)
x
=
24°
(v)
x
=
22°
Question
3
3.
In the given figure, △CDE ≅ △VUT. Which of the following are true?
a)
∠T = 59°
b)
∠U = 52°
c)
∠V = 52°
d)
∠V = 59°
e)
∠U = 69°
f)
∠T = 69°
(i)
{a,b}
(ii)
{c,d}
(iii)
{b,d,f}
(iv)
{c,b,d}
(v)
{e,a,f}
Question
4
4.
Which of the following are measures of an isosceles triangle ?
(i)
PQ = 15 cm , QR = 13 cm , RP = 19.85 cm
(ii)
PQ = 13 cm , QR = 14 cm , RP = 13 cm
(iii)
PQ = 11 cm , QR = 11 cm , RP = 11 cm
(iv)
PQ = 13 cm , QR = 11 cm , RP = 12 cm
(v)
PQ = 11 cm , QR = 13 cm , RP = 14 cm
Question
5
5.
In the given triangle, ∠B = 100.26°. Find the measure of ∠C and ∠D
(i)
∠C = ∠D = 40.87°
(ii)
∠C = ∠D = 38.87°
(iii)
∠C = ∠D = 41.87°
(iv)
∠C = ∠D = 37.87°
(v)
∠C = ∠D = 39.87°
Question
6
6.
Find the unknown angle in the following figure
(i)
x
=
46.32°
(ii)
x
=
47.32°
(iii)
x
=
44.32°
(iv)
x
=
48.32°
(v)
x
=
45.32°
Question
7
7.
Which of the following are measures of an equilateral triangle ?
(i)
∠L = 57.56° , ∠M = 76.87° , ∠N = 45.57°
(ii)
∠L = 47.49° , ∠M = 90° , ∠N = 42.51°
(iii)
∠L = 45° , ∠M = 90° , ∠N = 45°
(iv)
∠L = 60° , ∠M = 60° , ∠N = 60°
(v)
∠L = 50.06° , ∠M = 64.97° , ∠N = 64.97°
Question
8
8.
In an equilateral triangle ABC, the side BC is trisected at D. Then
(i)
7 AD
2
=
9 AB
2
(ii)
7 AD
2
=
3 AB
2
(iii)
3 AD
2
=
7 AB
2
(iv)
9 AD
2
=
7 AB
2
Question
9
9.
With the data in the figure, △HIK ≅ △IHJ by which property?
(i)
SSS Congruency
(ii)
SAS Congruency
(iii)
RHS Congruency
(iv)
not congruent
(v)
ASA Congruency
Question
10
10.
With the data in the given figure, △TGH ≅ △UHG by which property?
(i)
RHS Congruency
(ii)
SSS Congruency
(iii)
not congruent
(iv)
SAS Congruency
(v)
ASA Congruency
Question
11
11.
Which of the following are measures of an acute angled triangle ?
(i)
∠J = 33.69° , ∠K = 90° , ∠L = 56.31°
(ii)
∠J = 45° , ∠K = 90° , ∠L = 45°
(iii)
∠J = 94.41° , ∠K = 35.91° , ∠L = 49.68°
(iv)
∠J = 62.97° , ∠K = 54.07° , ∠L = 62.96°
(v)
∠J = 96.92° , ∠K = 37.92° , ∠L = 45.16°
Question
12
12.
The side opposite to the vertex
R
(i)
RV
(ii)
ST
(iii)
RS
(iv)
US
(v)
TR
Question
13
13.
Which of the following are measures of an obtuse angled triangle ?
(i)
JK = 14 cm , KL = 21 cm , LJ = 13 cm
(ii)
JK = 13 cm , KL = 12 cm , LJ = 12 cm
(iii)
JK = 11 cm , KL = 10 cm , LJ = 14.87 cm
(iv)
JK = 12 cm , KL = 12 cm , LJ = 16.97 cm
(v)
JK = 11 cm , KL = 13 cm , LJ = 11 cm
Question
14
14.
Find the measures of the three sides suitable to form a triangle?
(i)
KL = 13 cm , LM = 13 cm , MK = 13 cm
(ii)
KL = 6 cm , LM = 17 cm , MK = 8 cm
(iii)
KL = 20 cm , LM = 5 cm , MK = 14 cm
(iv)
KL = 18 cm , LM = 8 cm , MK = 6 cm
(v)
KL = 6 cm , LM = 16 cm , MK = 5 cm
Question
15
15.
Which of the following are measures of a right angled triangle ?
(i)
∠D = 60° , ∠E = 60° , ∠F = 60°
(ii)
∠D = 68.49° , ∠E = 68.49° , ∠F = 43.02°
(iii)
∠D = 132.72° , ∠E = 21.55° , ∠F = 25.73°
(iv)
∠D = 46.95° , ∠E = 61.26° , ∠F = 71.79°
(v)
∠D = 56.31° , ∠E = 90° , ∠F = 33.69°
Question
16
16.
The vertex opposite to the side
MN
(i)
P
(ii)
NO
(iii)
M
(iv)
L
Question
17
17.
With the data in the figure, △FHI ≅ △HFG by which property?
(i)
ASA Congruency
(ii)
SSS Congruency
(iii)
RHS Congruency
(iv)
SAS Congruency
(v)
not congruent
Question
18
18.
Which of the following are measures of an obtuse angled triangle ?
(i)
∠H = 57.2° , ∠I = 57.2° , ∠J = 65.6°
(ii)
∠H = 103.34° , ∠I = 41.56° , ∠J = 35.1°
(iii)
∠H = 45° , ∠I = 90° , ∠J = 45°
(iv)
∠H = 57.61° , ∠I = 57.61° , ∠J = 64.78°
(v)
∠H = 37.57° , ∠I = 90° , ∠J = 52.43°
Question
19
19.
Two angles of a triangle measure 61° and 53° respectively. Find the measure of the third angle of the triangle
(i)
65°
(ii)
64°
(iii)
67°
(iv)
66°
(v)
68°
Question
20
20.
With the given data in the figure, △TFG ≅ △SGF by which property?
(i)
SAS Congruency
(ii)
SSS Congruency
(iii)
not congruent
(iv)
RHS Congruency
(v)
ASA Congruency
Question
21
21.
If all the three angles of a triangle are of the same measure, find the measure of each of the angles.
(i)
61°
(ii)
58°
(iii)
59°
(iv)
62°
(v)
60°
Question
22
22.
In the given figure, which of the following is true?
(i)
△JLM ≅ △JKL
(ii)
△JML ≅ △KLJ
(iii)
△JLM ≅ △LJK
(iv)
△JML ≅ △JKL
(v)
△JLM ≅ △JLK
Question
23
23.
With the data in the given figure, △IKJ ≅ △JLI by which property?
(i)
RHS Congruency
(ii)
not congruent
(iii)
SAS Congruency
(iv)
ASA Congruency
(v)
SSS Congruency
Question
24
24.
Find the unknown marked angles in the following figure
(i)
x
=
111°
,
y
=
111°
(ii)
x
=
114°
,
y
=
114°
(iii)
x
=
112°
,
y
=
112°
(iv)
x
=
115°
,
y
=
115°
(v)
x
=
113°
,
y
=
113°
Question
25
25.
With the data in the figure, △JNM ≅ △KNL by which property?
(i)
RHS Congruency
(ii)
ASA Congruency
(iii)
SAS Congruency
(iv)
not congruent
(v)
SSS Congruency
Assignment Key
1) (i)
2) (iv)
3) (iii)
4) (ii)
5) (v)
6) (i)
7) (iv)
8) (iv)
9) (iv)
10) (iv)
11) (iv)
12) (ii)
13) (i)
14) (i)
15) (v)
16) (iv)
17) (v)
18) (ii)
19) (iv)
20) (iv)
21) (v)
22) (iii)
23) (i)
24) (v)
25) (iv)