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)