Question 1
1 Mark
If two interior angles on the same side of a transversal intersecting two parallel lines are in the ratio 2:3, then the greater of the two angles is
Options
Option A
54°
Option B is correct
108°
Option C
120°
Option D
136°
Questions & Answers: "Lines and Angles"
Complete guide to "Lines and Angles" for Math students. Below you will find important questions and model answers to help you prepare.
9 Questions
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We are building a dedicated quiz for this topic, but you can test your skills on a similar concept: Number Systems - Practice Set 1 (NCERT Class 9).
Question 2
1 Mark
If one angle of a triangle is equal to the sum of the other two angles, then the triangle is
Options
Option A
an isosceles triangle
Option B
an obtuse triangle
Option C
an equilateral triangle
Option D is correct
a right triangle
Question 3
1 Mark
An exterior angle of a triangle is 105° and its two interior opposite angles are equal. Each of these equal angles is
Options
Option A is correct
37.5°
Option B
52.5°
Option C
72.5°
Option D
75°
Question 4
1 Mark
The angles of a triangle are in the ratio 5:3:7. The triangle is
Options
Option A is correct
an acute angled triangle
Option B
an obtuse angled triangle
Option C
a right triangle
Option D
an isosceles triangle
Question 5
1 Mark
If one of the angles of a triangle is 130°, then the angle between the bisectors of the other two angles can be
Options
Option A
50°
Option B
65°
Option C
145°
Option D is correct
155°
Question 6
1 Mark
Angles of a triangle are in the ratio 2:4:3. The smallest angle of the triangle is
Options
Option A
60°
Option B is correct
40°
Option C
80°
Option D
20°
Question 7
1 Mark
In the following figure, if OP||RS, ∠OPQ = 110° and ∠QRS = 130°, then ∠ PQR is equal to
Options
Option A
40°
Option B
50°
Option C is correct
60°
Option D
70°
Question 8
1 Mark
In the following figure, POQ is a line. The value of x is
Options
Option A is correct
20°
Option B
25°
Option C
30°
Option D
35°
Question 9
1 Mark
In following figure, if AB || CD || EF, PQ || RS, ∠RQD = 25° and ∠CQP = 60°, then ∠QRS is equal to
Options
Option A
85°
Option B
135°
Option C is correct
145°
Option D
110°