CBSE Questions for Class 9 Maths Lines And Angles Quiz 8 - MCQExams.com

From the adjacent figure find the values of $$\angle P R S$$ (in degree).
1164291_471454f815904feca356da95832b2921.png
  • $$85$$
  • $$75$$
  • $$65$$
  • $$55$$
In the given figure $$\angle P Q R = \angle P R Q$$. 
in this question the statement is  $$\angle P Q S \ne \angle P R T$$.

1159984_df5095994dd64af6a5682d95edf58891.png
  • True
  • False
Find the complement of the angle $$63^o$$
  • $${70^ \circ}$$
  • $${27^ \circ}$$
  • $${45^ \circ}$$
  • $${62^ \circ}32'$$
The measure of an acute angle is always $$< 90^{o}$$.
  • True
  • False
Which of the following pairs represents pairof corresponding angles.
1280306_5f1c854544f54755952fd562bcb87883.jpg
  • $$\angle a$$ and $$\angle d$$
  • $$\angle a$$ and $$\angle e$$
  • $$\angle \mathrm { d }$$ and $$\angle i$$
  • $$\angle \mathrm { c }$$ and $$\angle \mathrm { h }$$
In triangle, three angles are  $$x , x + 10 ^ { \circ } + x + 20 ^ { \circ }$$  then the biggest is
  • $$70 ^ { \circ }$$
  • $$80 ^ { \circ }$$
  • $$90 ^ { \circ }$$
  • none
Find the lettered angle :


1450148_99986b283dd64d108f3926be080f9d2a.png
  • $$110^{\circ}$$
  • $$70^{\circ}$$
  • $$30^{\circ}$$
  • $$90^{\circ}$$
If the angles of triangle are in the ratio $$1:4:7$$, then the value of the largest angle is :
  • $$135^{\circ}$$
  • $$84^{\circ}$$
  • $$105^{\circ}$$
  • none of these
If the supplement of an angle is $$\dfrac { 5 }{ 2 } $$ times the complement of the same angle, find the supplementary angle.
  • $${ 150 }^{ \circ }$$
  • $${ 60 }^{ \circ }$$
  • $${ 30 }^{ \circ }$$
  • $${ 120 }^{ \circ }$$
The complementary angle of $$75^{\circ}$$ is _______.
  • $$75^{\circ}$$
  • $$105^{\circ}$$
  • $$15^{\circ}$$
  • $$25^{\circ}$$
In the figure below, $$AA'$$ is parallel to $$CC'$$. The measure $$w$$ of $$\angle A'AB$$ is equal to $$135^\circ$$ and the measure $$z$$ of $$\angle C'CB$$ is equal to $$147^\circ$$. Find $$\angle ABC$$. 
1612546_b142a902d0504fcc9fc561ee88fa4097.PNG
  • $$100^\circ$$
  • $$78^\circ$$
  • $$80^\circ$$
  • $$110^\circ$$
Complement of $$60^o$$ is?
  • $$30^o$$
  • $$130^o$$
  • $$120^o$$
  • $$90^o$$
Which of the following statements are true (T) and which are false (F)?
Angles forming a linear pair are supplementary.
  • True
  • False
Mark the correct alternative of the following.
An angle of measure $$140^o$$ is?
  • An acute angle
  • An obtuse angle
  • A straight angle
  • A complete angle
Mark the correct alternative of the following.
The sum of an angle and one third of its supplementary angle is $$90^o$$. The measure of the angle is?
  • $$135^o$$
  • $$120^o$$
  • $$60^o$$
  • $$45^o$$
Mark the correct alternative of the following.
In figure, if AB$$||$$CD then the value of x is?
1677652_908ec46d8c1943cebe1c9f3415e0d137.png
  • $$34$$
  • $$124$$
  • $$24$$
  • $$158$$

Two supplementary angles are in the ratio $$3:2$$. The smaller angle measures?
  • $$108^o$$
  • $$81^o$$
  • $$72^o$$
  • $$68^o$$
The complement of $$80^{o}$$ is:
  • $$100^{o}$$
  • $$10^{o}$$
  • $$20^{o}$$
  • $$280^{o}$$
Mark the correct alternative of the following:
In figure, $$AB||CD||EF$$, $$\angle ABG=110^o$$, $$\angle GCD=100^o$$ and $$\angle BGC=x^o$$. The value of $$x$$ is?
1677641_59531b443511488db1baa8a5a27c2071.png
  • $$35$$
  • $$50$$
  • $$30$$
  • $$40$$
Mark the correct alternative of the following:
The sum of an angle and half of its complementary angle is $$75^o$$. The measure of the angle is?
  • $$40^o$$
  • $$50^o$$
  • $$60^o$$
  • $$80^o$$
Mark the correct alternative of the following.
In figure, if AC$$||$$DF and AB$$||$$CE, then?
1677661_2b0b41da33cb4c859535fe735d20434a.png
  • $$x=145$$, $$y=223$$
  • $$x=223$$, $$y=145$$
  • $$x=135$$, $$y=233$$
  • $$x=233$$, $$y=135$$
Mark the correct alternative of the following.
In figure, if AB$$||$$CD then $$x=?$$
1677656_e3c4cc5829234ad191729984eea5741f.png
  • $$54$$
  • $$39$$
  • $$44$$
  • $$64$$
Mark the correct alternative of the following:
Two complementary angles are in the ratio $$2:3$$. The measure of the larger angle is?
  • $$60^o$$
  • $$54^o$$
  • $$66^o$$
  • $$48^o$$
Mark the correct alternative of the following.
$$\angle A$$ is an obtuse angle. The measure of $$\angle A$$ and twice its supplementary differ by $$30^o$$. Then, $$\angle A$$ can be?
  • $$130^o$$
  • $$110^o$$
  • $$140^o$$
  • $$120^o$$
An angle is its own complement. The measure of the angle is:
  • $$30^{o}$$
  • $$45^{o}$$
  • $$90^{o}$$
  • $$60^{o}$$
An angle is $$24^{o}$$ more than its complement. The measure of the angle is:
  • $$47^{o}$$
  • $$57^{o}$$
  • $$53^{o}$$
  • $$66^{o}$$
The supplement of $$45^{o}$$ is
  • $$45^{o}$$
  • $$75^{o}$$
  • $$135^{o}$$
  • $$155^{o}$$
An angle measuring $$270^{o}$$ is:
  • an obtuse angle
  • an acute angle
  • a straight angle
  • a reflex angle
In the adjoining figure, what value of $$x$$ will make $$AOB$$ a straight line?
1781581_ca40fb02d1ae4eccba49ea339c51f634.PNG
  • $$x$$ = $$30$$
  • $$x$$ = $$35$$
  • $$x$$ = $$25$$
  • $$x$$ = $$40$$
In the given figure, what value of $$x$$ will make $$AOB$$ a straight line?
1781604_63fed142a32d4db5bc2d47a0824f1c78.PNG
  • $$x$$ = $$50$$
  • $$x$$ = $$100$$
  • $$x$$ = $$60$$
  • $$x$$ = $$80$$
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