ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade VI - Triangles
Question 1
1.
Which of the following are measures of an isosceles triangle ?
  • FG = 15 cm , GH = 10 cm , HF = 18.03 cm
  • FG = 13 cm , GH = 13 cm , HF = 13 cm
  • FG = 13 cm , GH = 11 cm , HF = 10 cm
  • FG = 11 cm , GH = 14 cm , HF = 11 cm
  • FG = 13 cm , GH = 15 cm , HF = 12 cm
Question 2
2.
In the given figure , if KH ⟂ IJ and ∠HIK = 39.58°, find ∠KJH
  • 53.03°
  • 55.03°
  • 52.03°
  • 54.03°
  • 56.03°
Question 3
3.
In the given figure, find ∠EIH
  • 139°
  • 140°
  • 143°
  • 141°
  • 142°
Question 4
4.
Find the angles of the triangle
  • A
    =
    36°
    ,
    B
    =
    45°
    ,
    C
    =
    99°
  • A
    =
    34°
    ,
    B
    =
    45°
    ,
    C
    =
    101°
  • A
    =
    36°
    ,
    B
    =
    43°
    ,
    C
    =
    101°
  • A
    =
    34°
    ,
    B
    =
    47°
    ,
    C
    =
    99°
  • A
    =
    38°
    ,
    B
    =
    45°
    ,
    C
    =
    97°
Question 5
5.
Find the unknown marked angle in the following figure
  • x
    =
    64.15°
  • x
    =
    65.15°
  • x
    =
    67.15°
  • x
    =
    66.15°
  • x
    =
    63.15°
Question 6
6.
Which of the following are measures of an acute angled triangle ?
  • BC = 12 cm , CD = 18 cm , DB = 12 cm
  • BC = 13 cm , CD = 13 cm , DB = 18.38 cm
  • BC = 15 cm , CD = 13 cm , DB = 13 cm
  • BC = 14 cm , CD = 10 cm , DB = 17.2 cm
Question 7
7.
    • The angles of the triangle are
  • ∠I , ∠J , ∠K
  • ∠J , ∠K , ∠L
  • ∠I , ∠J , ∠L
  • ∠H , ∠I , ∠J
  • ∠H , ∠I , ∠K
Question 8
8.
One angle of a triangle measures 45° and the other two angles are in the ratio 4 : 11. Find these angles.
  • B
    =
    34°
    ,
    C
    =
    97°
  • B
    =
    35°
    ,
    C
    =
    98°
  • B
    =
    38°
    ,
    C
    =
    101°
  • B
    =
    36°
    ,
    C
    =
    99°
  • B
    =
    37°
    ,
    C
    =
    100°
Question 9
9.
Which of the following are measures of a right angled triangle ?
  • HI = 13 cm , IJ = 13 cm , JH = 13 cm
  • HI = 11 cm , IJ = 16 cm , JH = 10 cm
  • HI = 13 cm , IJ = 15 cm , JH = 19.85 cm
  • HI = 13 cm , IJ = 12 cm , JH = 10 cm
  • HI = 12 cm , IJ = 10 cm , JH = 11 cm
Question 10
10.
Which of the following are measures of an obtuse angled triangle ?
  • BC = 11 cm , CD = 11 cm , DB = 15.56 cm
  • BC = 13 cm , CD = 24 cm , DB = 15 cm
  • BC = 10 cm , CD = 14 cm , DB = 10 cm
  • BC = 11 cm , CD = 12 cm , DB = 11 cm
  • BC = 13 cm , CD = 12 cm , DB = 17.69 cm