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CBSE Questions for Class 9 Maths Lines And Angles Quiz 2 - MCQExams.com

With respect to the figure, write all pairs of adjacent angles and all the linear pairs. 

243437_d44db93c13ae47b6ae6e58b400baf3bc.png
  •  Adjacent angles: AOD  &  COD 
  • Adjacent angles: BOC  &  COD
  • Linear pairs: AOD  &  BOD
  • Linear pairs: AOC  &  BOC
Find the measure of the complementary angle of each of 20o.
  • 50o
  • 70o
  • 160o
  • 80o
Find the measure of the supplementary angle of 132o
  • 48o
  • 32o
  • 42o
  • 38o
A ray stands on a line, then the sum of the two adjacent angles so formed is ______.
  • 180
  • 90
  • 360
  • 270
Based on the angle measures given, which triangle is not acute?
  • 35,69,76
  • 60,60,60
  • 88,46,46
  • 90,45,45
Based on the given figure, which of the following statements is true?
265967_3db056aea852413b83a41b42b05ee3f4.png
  • 5 and 7 are supplementary angles.
  • 7=55
  • 8 and 1 are corresponding angles.
  • 4 and 5 are alternate angles.
An exterior angle of a triangle is equal to the sum of two ______ opposite angles.
  • interior
  • exterior
  • vertical
  • none of these
Find the measure of the complementary angle of 90.
  • 0
  • 45
  • 90
  • 60
If an angle is 28o less than its complement, find its measure.
  • 31o
  • 131o
  • 28o
  • 32o
One of the angles of a triangle is 65o. Find the remaining two angles, if their difference is 25o.
  • 70o,45o
  • 55o,40o
  • 50o,85o
  • 75o,40o
AOB is a / an _____________ angle.
265554_5bf77144f76d44b6a4cd7c71101739bf.png
  • acute
  • right
  • obtuse
  • none of these
OA and OB are opposite rays.
If x=75o, what is the value of y?

243465_460a94dfcdcb42878cf5616492ae2f8c.png
  • 105o
  • 75o
  • 45o
  • 15o
91 is an example of 
  • obtuse
  • acute
  • right
  • Reflex
Fill in the blanks with the correct word from the options given.
Parallel lines are ____ intersecting lines.
  • Always
  • Never
  • Sometimes
  • Data Insuficient
179 is an example of 
  • obtuse angle.
  • acute angle.
  • right angle.
  • None of the above
Which angles in the given figure are complementary?
264901_e9cbf09ccb034613ad9c6cff72d7ddf8.png
  • 1 and 2
  • 2 and 3
  • 3 and 4
  • 4 and 1
89 is an example of :
  • obtuse
  • acute
  • right
  • None of the above
If two angles in a triangle are 40o and 60o, then the third angle is:
  • 90o
  • 80o
  • 70o
  • 60o
Given : AB || CD.

If 2 is an acute angle, then 1 is
265957_8e5d0d86be1f4ceabd0471b356a50672.png
  • Acute
  • Right
  • Obtuse
  • Straight
Straight angle is ________
  • 90
  • 180
  • 60
  • 45
Supplementary angle of 102 is:
  • 180
  • 90
  • 78
  • 60
Two complementary angles are in the ratio 1:9. The angles are:
  • 54,36
  • 9,81
  • 10,90
  • 11,79
Find x; if 1=5x+15 and 2=28x, angles form linear pair.
  • 40
  • 140
  • 5
  • 20
The supplementary angle of 120o is:
  • 30o
  • 50o
  • 240o
  • 60o
Which two angles are supplementary?
265860_b530984934d04b91ab2e2ce32fd6d17b.png
  • COF and AOC
  • COF and COE
  • COF and EOD
  • COF and AOE
An angle which is more than 180 and less than 360 is called:
  • obtuse angle
  • right angle
  • reflex angle
  • complete angle
Complement angle of the angle is:
272152_c4172436971d456fafd44a6523888ff5.png
  • 77.4
  • 67.3
  • 76.3
  • 77.3
An angle which measures 180 is called_______angle.
  • zero
  • right
  • straight
  • acute
A line which intersects two or more lines at different points is:
  • perpendicular
  • transversal
  • parallel
  • none of these
An angle which measures more than 0 and less than 90 is called 
  • obtuse
  • acute
  • right
  • none of these
0:0:1


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