LINES AND ANGLES

If the angles of a triangle are in the ratio 2:3:4, then the triangle formed will be
1. right angled triangle
2. isosceles triangle
3. scalene triangle
4. obtuse angled triangle
The measure of an angle is four times the measure of its supplementary angle. Then the angle is ____.
1. 36
2. 144
3. 180
4. 72
The angles which differ by 38 and are complementary to each other, are
1. 38,52
2. 71,109
3. 26,154
4. 64,26
If two complementary angles are in the ratio 4:5, then the angles are ____.
1. 50 , 45
2. 40 , 50
3. 25 ,55
4. 35 , 45
Read the statements carefully and state T for true and 'F' for false.
(i) Two lines parallel to the same line are parallel to one another.
(ii) If two lines parallel to each other are intersected by a transversal, then corresponding angles are equal.
(iii) If two parallel lines are intersected by a transversal then alternate angles are equal.
1. (i) (ii) (iii)
  T F F
2. (i) (ii) (iii)
  T F T
3. (i) (ii) (iii)
  T T F
4. (i) (ii) (iii)
  T T T
Fill in the blanks.
(i) Angle forming a linear pair are P angles.
(ii) The angle between the bisectors of the two acute angles of a right-angled traingle is Q.
(iii) Sum of interior angles of a quadrilateral is R.
1. P Q R
  Supplementary 135 360
2. P Q R
  Complementary 135 720
3. P Q R
  Supplementary 90 180
4. P Q R
  Complementary 90o 360o
Which of the following statements is CORRECT?
1. If two angles forming a linear pair, then each of these angle is of measure90.
2. Angles forming a linear pair can both be acute angles.
3. Both of the angles forming a linear pair can be obtuse angles.
4. Bisectors of the adjacent angles forming a linear pair form a right angle.
The measure of an angle is four times the measure of its supplement. Identify the angles.
1. 36,144
2. 40,160
3. 18,72
4. 50,200
If two supplementary angles are in the ratio4:5, find the angles.
1. 80,100
2. 85,95
3. 40,50
4. 60,120
Two parallel lines are cut by a transversal then which of the following is true?
(I) Pair of alternate interior angles are same.
(II) Pair of corresponding angles are same.
(III) Pair of interior angles on the same side of the transversal are complementary.
1. I, II, III are true
2. I, II are true
3. I, II are true
4. II, III are true
In the given figure, find the value of ∠EOD.
1. 25
2. 70
3. 80
4. 90
In the given figure, if CE||BA,then the value of ∠ACBis
1. 60
2. 55
3. 70
4. 90
In figure, if AB||CD,CD||EFand y:z=4:5,then find the value ofx.
1. 100
2. 76
3. 82
4. 122
In the given figure,AB||CDand PQ, QR intersects AB and CD both at E, F and G, H respectively. Find the value ofx.
1. 40
2. 20
3. 100
4. 30
In the figure, AB||CD.If x−(4/3)yand y=(3/8)z,find the values of x,yand z respectively.
1. 30,45,86
2. 48,36,96
3. 48,36,90
4. 36,45,96
In the given figure, lines XY and MN intersect at O. If ∠POY=90oand a : b = 2:3, then ∠XONis equal to ____.
1. 126
2. 130
3. 90
4. 180
The value of x,in the given triangle is _____.
1. 4
2. 5
3. 6
4. 8
In the given figure, ∠PAQis equal to
1. 45
2. 100
3. 35
4. None
If AB||CD,then x and y respectively are_____.
1. 40,30
2. 50,77
3. 30,45
4. 90,30
From the given figure, find the value of y whenx=30.
1. 25
2. 24
3. 36
4. 45
InΔABC,∠A=∠B/2=∠C/6. Find the measure of measure of∠A.
1. 60
2. 30
3. 40
4. 20
In the figure, the bisectors of B and C meet atO. Find the measure of∠BOC.
1. 90+(1/2)∠A
2. 90+(1/2)∠B
3. 90+(1/2)∠C
4. 90+∠A

LINES AND ANGLES

Quiz