**MCQs Questions for Class 9 Maths Chapter 6 Lines and Angles**

In this 21^{st} century, Multiple Choice Questions (MCQs) play an important role to prepare for a competitive examination. Now-a-days, MCQs questions are asked in CBSE board examinations as well. In most of the competitive examinations, only MCQ Questions are asked.

In future, if you want to prepare for competitive examination, then you should focus on the MCQs questions. Thus, let’s solve these MCQs questions to make our foundation strong.

In this post, you will find **20** **MCQs questions for class 9 maths chapter 6 lines and angles**.

**MCQs Questions for Class 9
Maths Chapter 6 Lines and Angles**

**1. ****Two parallel lines intersect at:****
**(a) One
point

(b) Two points

(c) Three points

(d) Null

**Answer:
d**

**2. ****Intersecting lines cut each other at:****
**(a) One
point

(b) Two points

(c) Three points

(d) Null

**Answer:
a**

**3. **An exterior
angle of a triangle is 80° and the interior opposite angles are in the ratio 1
: 3, measure of interior opposite angles are

(a) 30°, 90°

(b) 40°, 120°

(c) 20°, 60°

(d) 30°, 60°

**Answer:
c**

**4. **The angle of a
triangle are in the ratio 5 : 3 : 7, the triangle is

(Ð°) an acute-angled triangle

(b) an obtuse angled triangle

(c) an right angled triangle

(d) an isosceles triangle.

**Answer:
a**

**5.**** If two lines intersect each other, then the vertically opposite angles
are:****
**(a)
Equal

(b) Unequal

(c) Cannot be determined

(d) None of the above

**Answer:
a**

**6. **If one angle of
a triangle is equal to the sum of the other two, then the triangle is

(a) an isosceles triangle

(b) an obtuse-angled triangle

(c) an equilateral triangle

(d) a right triangle

**Answer:
d**

**7.**** A line joining two endpoints are called:****
**(a)
Line segment

(b) A ray

(c) Parallel lines

(d) Intersecting lines

**Answer:
a**

**8. **One of the
angles of a triangle is 75°. If the difference of other two is 35°, then the
largest angle of other two angles has a measure

(a) 80°

(b) 75°

(c) 70°

(d) 135°

**Answer:
c**

**9.**** An acute angle is:****
**(a)
More than 90˚

(b) Less than 90˚

(c) Equal to 90˚

(d) Equal to 180˚

**Answer:
b**

**10. **Each angle of
an equilateral triangle is

(a) 50°

(b) 90°

(c) 54°

(d) 60°

**Answer:
d**

**11.
****Two angles whose sum is equal to
180° are called:****
**(a)
Vertically opposite angles

(b) Complementary angles

(c) Adjacent angles

(d) Supplementary angles

**Answer:
d**

**12. **In the given
figure, if AOB is a straight line, then ∠BOC is

(a) 80°

(b) 70°

(c) 60°

(d) 20

**Answer:
a**

**13.** If two
complementary angles are in the ratio 13 : 5, then the angles are:

(a) 13*x*^{o}, 5*x*^{o}

(b) 25^{o}, 65^{o}

(c) 65^{o}, 25^{o}

(d) 65^{o}, 35^{o}

**Answer:
c**

**14. **In figure, find
the value of y.

(a) 28°

(b) 40°

(c) 140°

(d) 56°

**Answer:
a**

**15. **The** **value of *x* in
the given figure is:

(a) 20^{o}

(b) 40^{o}

(c) 80^{o}

(d) 160^{o}

**Answer:
b**

**16. **In the given figure, AB || CD, then the value
of x is:

(a) 35°

(b) 40°

(c) 60°

(d) 75°

**Answer:
d**

**17. **In Î”ABC, ∠A = 50° and the external bisectors of ∠B and ∠C meet at O as shown in figure. The measure of ∠BOC is

(a) 40°

(b) 65°

(c) 115°

(d) 140°

**Answer:
b**

**18. **In figure l_{1} ||
l_{2}, the value of x is

(a) 80°

(b) 100°

(c) 110°

(d) 70°

**Answer:
a**

**19. **Given that,
lines l_{1} || l_{2} and l_{2} || l_{3} in
the figure. The value of x is

(a) 40°

(b) 140°

(c) 50°

(d) 80°

**Answer:
b**

**20. **In the given figure,
measure of ∠ABC is

(a) 60°

(b) 70°

(c) 80°

(d) 50

**Answer:
a**