CBSE Class 9 Maths Lines and Angles MCQs

Question. If a ray stands on a line then the sum of the adjacent angles so formed is
(a) 100⁰
(b) 180⁰ 
(c) 90⁰
(d) 360⁰

Question. The sum of all the angles around a point is
(a) 100⁰
(b) 180⁰ 
(c) 90⁰
(d) 360⁰

Question. The sum of all the angles formed on the same side of a line at a given point on the line is
(a) 100⁰
(b) 180⁰ 
(c) 90⁰
(d) 360⁰

Question. The angle which is four times its complement is
(a) 60⁰
(b) 30⁰ 
(c) 45⁰
(d) 72⁰

Question. The angle which is five times its supplement is
(a) 150⁰
(b) 180⁰ 
(c) 90⁰
(d) 360⁰

Question. The measure of an angle which is equal to its complement is
(a) 60⁰
(b) 30⁰ 
(c) 45⁰
(d) 15⁰

Question. The measure of an angle which is equal to its supplement is
(a) 100⁰
(b) 75⁰ 
(c) 90⁰
(d) 60⁰

Question. If two parallel lines are intersected by a transversal, then the bisectors of the two pairs of interior angles enclose
(a) a square
(b) a rectangle
(c) a parallelogram
(d) a trapezium

Question. Two adjacent angles on a straight line are in the ratio 5 : 4. then the measure of each one of these angles are
(a) 100⁰ and 80⁰
(b) 75⁰ and 105⁰ 
(c) 90⁰ and 90⁰
(d) 60⁰ and 120⁰

Question. Two lines PQ and RS intersect at O. If
(a) 120⁰
(b) 130⁰ 
(c) 90⁰
(d) 150⁰

Question. In the adjoining figure the value of x is
(a) 25⁰
(b) 28⁰ 
(c) 30⁰
(d) 60⁰

Question. If two straight lines intersect each other in such a way that one of the angles so formed measure 90⁰, then each of the remaining angles measures is
(a) 50⁰
(b) 75⁰ 
(c) 90⁰
(d) 60⁰

Question. In fig. AB and CD intersect each other at O. If ∠AOC + ∠BOE = 700 and ∠BOD = 400 then the value of ∠BOE is 

(a) 30⁰
(b) 110⁰
(c) 120⁰
(d) 150⁰

Question. In fig. POQ is a line, ∠POR = 4x and ∠QOR = 2x then the value of x is 

(a) 50⁰
(b) 20⁰
(c) 30⁰
(d) 900

Question. In the given fig. ∠AOC + ∠BOD = 750, then the value of ∠COD is

(a) 130⁰
(b) 105
(c) 120⁰
(d) 750

Question. In the fig. the value of y is: 

(a) 60⁰
(b) 18⁰
(c) 30⁰
(d) 900

Question. In fig., the value of x is: 

(a) 60⁰
(b) 15⁰
(c) 30⁰
(d) 450

Question. In fig. ∠POR and ∠QOR form a linear pair if a – b = 80⁰ then values of a and b respectively are: 

(a) 130⁰ and 50⁰
(b) 50⁰ and 130⁰
(c) 60⁰ and 120⁰
(d) 40⁰ and 1400

Question. For two parallel lines sum of interior angles on the same side of a transversal line is
(a) 100⁰
(b) 180⁰
(c) 90⁰
(d) 3600

Question. In fig., lines XY and MN intersect each other at point O. If ∠POY = 900 and a : b = 2 : 3 then the value of ∠C is 

(a) 140⁰
(b) 120⁰
(c) 80⁰
(d) 950

Question. In fig. ∠XYZ = 640 and XY is produced to point P. If ray YQ bisect ∠ZYP then the value of ∠XYQ is 

(a) 122⁰
(b) 126⁰
(c) 302⁰
(d) 2580

Question. In fig., b is more than one-third of a right angle than a. The values of a and b are:
(a) 950 and 85⁰
(b) 1050 and 75⁰
(c) 600 and 120⁰
(d) 650 and 1150

Question. In fig., n – x = 30 then values of x and n are: 

(a) 126⁰ and 129⁰
(b) 125⁰ and 28⁰
(c) 150⁰ and 95⁰
(d) 1350 and 650

Question. In fig., q || r and p is transversal. If ∠1 and ∠2, 3 : 2 then the values of ∠3 and ∠4 are:  

(a) 108⁰ and 72⁰
(b) 72⁰ and 108⁰
(c) 75⁰ and 105⁰
(d) 85⁰ and 950

Question. In fig. the values of x and y are equal to: 

(a) 130⁰
(b) 150⁰
(c) 160⁰
(d) 135⁰

Question. In fig. AB and CD intersect each other at O. If ∠AOC + ∠BOE = 700 and ∠BOD = 400 then the value of ∠COE is
(a) 250⁰
(b) 70⁰
(c) 30⁰
(d) 50⁰

Question. In fig, if AB || CD, CD || EF and y : z = 3 : 7 then value of x is: 

(a) 126⁰
(b) 120⁰
(c) 58⁰
(d) 62⁰

Question. In fig, if AB || CD, EF ⊥ CD and ∠GED = 126⁰ then the value of ∠AGE is 

(a) 126⁰
(b) 120⁰
(c) 128⁰
(d) 54⁰

Question. In fig, if PQ || ST, ∠PQR = 110⁰ and ∠RST = 130⁰ then the value of ∠QRS is 

(a) 60⁰
(b) 120⁰
(c) 80⁰
(d) 90⁰

Question. In fig., AB || CD, ∠APQ = 50⁰, ∠PRD = 127⁰, then the value of x and y respectively are 

(a) 50⁰ and 77⁰
(b) 40⁰ and 85⁰
(c) 60⁰ and 90⁰
(d) 85⁰ and 75⁰

Question. In fig, AB || CD, the value of x is: 

(a) 185⁰
(b) 280⁰
(c) 285⁰
(d) 195⁰

Question. In fig, if ∠AOC, ∠COD are equal and ∠BOD is a right angle, then the values of ∠AOC and ∠COD are: 

(a) 60⁰
(b) 30⁰
(c) 45⁰
(d) 90⁰

Question. In fig, the sum of ∠a and ∠b is: 

(a) ∠c + ∠d
(b) ∠d + ∠e
(c) ∠b + ∠c
(d) ∠a + ∠c

Question. In triangle interior opposite angle is always less than:
(a) any angle of the triangle
(b) opposite angle
(c) right angle
(d) exterior angle

Question. In a triangle sum of two interior opposite angles is always equal to:
(a) third angle
(b) opposite angle
(c) right angle
(d) none of these

Question. In a triangle exterior angle is always greater than:
(a) third angle
(b) interior opposite angles
(c) right angle
(d) none of these

Question: What is the common between the three angles of a triangle and a linear pair
(a) angles are equal
(b) in both cases sum of angle is 180°.
(c) In triangle there are three angles and in linear pair there are two angles
(d) none of these.

Question: In the given below left figure, the bisectors of <BCA, intersect each other at point O. If °, the 
(a) 30° 
(b) 20°
(c) 40° 
(d) 50°

Question: In the given above right sided figure, <2 and <8 are known as
(a) exterior angles
(b) exterior angles on the same side of transversal.
(c) alternate angles
(d) alternate exterior angles.

Question: In the given figure, measure of 
(a) 10.5° 
(b) 42°
(c) 111° 
(d) 50°

Question: An angle is 200 more than three times the given angle. If the two angles are supplementary the angles are
(a) 20° and 160° 
(b) 40° and 140°
(c) 60° and 120° 
(d) 70° and 110° 

Question: In figure, if l1 || l2, what is the value of x
(a) 90° 
(b) 85°
(c) 75° 
(d) 70°

Question: If a wheel has six spokes equally spaced, then the measure of the angle between two adjacent spokes is 
(a) 90° 
(b) 30°
(c) 60° 
(d) 180° 

Question: In figure, which of the following statements must be true? 
(i) a + b = d + c (ii) a + c + e = 180° (iii) b + f = c + e 
(a) (i) only
(b) (ii) only
(c) (iii) only
(d) (ii) and (iii) both

Question: The angle which is two times its complement is
(a) 60^° 
(b) 30^° 
(c) 45^° 
(d) 72^°

Question: The angle which is two times its supplement is 
(a) 150° 
(b) 60°
(c) 90° 
(d) 120°