Lines And Angles CBSE Questions & Answers

Lines And Angles

This is Mathematics Class 09 Lines and Angles CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
In the given figure, \(\angle \)BAC = 40\(^0\), \(\angle \)ACB = 90\(^0\) and \(\angle \)BED = 100\(^0\), Then \(\angle \)BDE = ?
Question 1 figure 1
  • A
    25\(^0\)
  • B
    40\(^0\)
  • C
    50\(^0\)
  • D
    30\(^0\)
    Correct
2
In the given figure, BO and CO are the bisectors of \(\angle \)B and \(\angle \)C respectively. If \(\angle \)A = 50\(^0\), then \(\angle \)BOC = ?
Question 2 figure 1
  • A
    130\(^0\)
  • B
    115\(^0\)
    Correct
  • C
    100\(^0\)
  • D
    120\(^0\)
3
In the given figure, AB \(\parallel \) CD. If \(\angle \)EAB = 50\(^0\) and \(\angle \)ECD = 60\(^0\), then \(\angle \)AEB = ?
Question 3 figure 1
  • A
    55\(^0\)
  • B
    60\(^0\)
  • C
    70\(^0\)
    Correct
  • D
    50\(^0\)
4
In the given figure, \(\angle \)OAB = 75\(^0\), \(\angle \)OBA = 55\(^0\) and \(\angle \)OCD = 100\(^0\). Then \(\angle \)ODC = ?
Question 4 figure 1
  • A
    30\(^0\)
    Correct
  • B
    20\(^0\)
  • C
    35\(^0\)
  • D
    25\(^0\)
5
An angle is one-fifth of its supplement. The measure of the angle is :-
Question 5 figure 1
  • A
    30\(^0\)
    Correct
  • B
    75\(^0\)
  • C
    150\(^0\)
  • D
    15\(^0\)
6
In the given figure, AB \( \parallel \) CD, If \(\angle \)ABO = 45\(^0\) and \(\angle \)COD = 100\(^0\) then \(\angle \)CDO = ?
Question 6 figure 1
  • A
    45\(^0\)
  • B
    30\(^0\)
  • C
    25\(^0\)
  • D
    35\(^0\)
    Correct
7
In the given figure, AB \( \parallel \) DC, \(\angle \)BAD = 90\(^0\), \(\angle \)CBD = 280 and \(\angle \)BCE = 65\(^0\). Then \(\angle \)ABD = ?
Question 7 figure 1
  • A
    43\(^0\)
  • B
    53\(^0\)
  • C
    32\(^0\)
  • D
    37\(^0\)
    Correct
8
For what value of x shall we have l \( \parallel \) m ?
Question 8 figure 1
  • A
    x = 70
  • B
    x = 60
  • C
    x = 50
    Correct
  • D
    x = 45
9
In the given figure, sides CB and BA of \(\Delta\)ABC have been produced to D and E respectively such that \(\angle \)ABD = 110\(^0\) and \(\angle \)CAE = 135\(^0\). Then \(\angle \)ACB = ?
Question 9 figure 1
  • A
    65\(^0\)
    Correct
  • B
    35\(^0\)
  • C
    55\(^0\)
  • D
    45\(^0\)
10
In \(\Delta\)ABC, BD \( \bot \) AC, \(\angle \)CAE = 30\(^0\) and \(\angle \)CBD = 40\(^0\). Then \(\angle \)AEB = ?
Question 10 figure 1
  • A
    80\(^0\)
    Correct
  • B
    50\(^0\)
  • C
    60\(^0\)
  • D
    70\(^0\)
11
In the given figure, AB \( \parallel \) CD, CD \( \parallel \) EF and y : z = 3 : 7, then x = ?
Question 11 figure 1
  • A
    162\(^0\)
  • B
    126\(^0\)
    Correct
  • C
    108\(^0\)
  • D
    63\(^0\)
12
In the given figure, AB \( \parallel \) CD \( \parallel \) EF, EA \( \bot \) AB and BDE is the transversal such that \(\angle \)DEF = 55\(^0\), Then \(\angle \)AEB = ?
Question 12 figure 1
  • A
    35\(^0\)
    Correct
  • B
    45\(^0\)
  • C
    25\(^0\)
  • D
    55\(^0\)
13
In the given figure, AM \( \bot \)BC and AN is the bisector of \(\angle \)A. If \(\angle \)ABC = 70\(^0\) and \(\angle \)ACB = 20\(^0\), then MAN = ?
Question 13 figure 1
  • A
    15\(^0\)
  • B
    20\(^0\)
  • C
    25\(^0\)
    Correct
  • D
    30\(^0\)
14
The sides BC, CA and AB of \(\Delta\)ABC have been produced to D, E and F respectively as shown in the figure, forming exterior angles \(\angle \)ACD, \(\angle \)BAE and \(\angle \)CBF. Then, \(\angle \)ACD = \(\angle \)BAE + \(\angle \)CBF = ?
Question 14 figure 1
  • A
    320\(^0\)
  • B
    240\(^0\)
  • C
    300\(^0\)
  • D
    360\(^0\)
    Correct
15
The sides BC, BA and CA of \(\Delta\) ABC have been produced to D, E and F respectively, as shown in the give figure, Then, \(\angle \)B ?
Question 15 figure 1
  • A
    35\(^0\)
  • B
    75\(^0\)
    Correct
  • C
    65\(^0\)
  • D
    55\(^0\)