CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade IX - Lines and Angles
Question 1
1.
The following angle represents
  • obtuse angle
  • complete angle
  • reflex angle
  • acute angle
  • right angle
Question 2
2.
In the given figure l ∥ m. Find the value of 'z'
  • 13
  • 11
  • 8
  • 10
  • 9
Question 3
3.
Find the angles of the triangle
  • B
    =
    25°
    ,
    C
    =
    35°
    ,
    D
    =
    120°
  • B
    =
    27°
    ,
    C
    =
    35°
    ,
    D
    =
    118°
  • B
    =
    25°
    ,
    C
    =
    33°
    ,
    D
    =
    122°
  • B
    =
    23°
    ,
    C
    =
    35°
    ,
    D
    =
    122°
  • B
    =
    23°
    ,
    C
    =
    37°
    ,
    D
    =
    120°
Question 4
4.
The following angle represents
  • acute angle
  • complete angle
  • straight angle
  • obtuse angle
  • right angle
Question 5
5.
Which of the following are true?
a)
Capital letters are used to represent points
b)
Small letters are used to represent lines
c)
A line has an infinite number of points on it
d)
A ray has an infinite number of points on it
e)
The length of a line segment cannot be determined
  • {e,c}
  • {e,a}
  • {e,d,a}
  • {e,b}
  • {a,b,c,d}
Question 6
6.
    • The complementary angle of
    • 52°
    • is
  • 48°
  • 53°
  • 68°
  • 43°
  • 38°
Question 7
7.
Two angles of a triangle measure 55° and 53° respectively. Find the measure of the third angle of the triangle
  • 70°
  • 71°
  • 72°
  • 73°
  • 74°
Question 8
8.
Find the value of a in the figure below
  • 22
  • 20
  • 21
  • 19
  • 17
Question 9
9.
Which of the following are adjacent angles in the below figure?
  • ∠GOH , ∠HOI
  • ∠JOK , ∠HOI
  • ∠IOG , ∠KOL
  • ∠HOI , ∠JOK
  • ∠KOL , ∠HOI
Question 10
10.
In the following figure, one side of a triangle has been produced. Find all the angles of the triangle.
  • J
    =
    58°
    ,
    K
    =
    47°
    ,
    L
    =
    75°
  • J
    =
    60°
    ,
    K
    =
    45°
    ,
    L
    =
    75°
  • J
    =
    60°
    ,
    K
    =
    43°
    ,
    L
    =
    77°
  • J
    =
    58°
    ,
    K
    =
    45°
    ,
    L
    =
    77°
  • J
    =
    62°
    ,
    K
    =
    45°
    ,
    L
    =
    73°