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)