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# NCERT Solutions for Class 7 Maths Chapter 5: Lines and Angles

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NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles is the best study material for those students who are finding difficulties in solving problems. These solutions can help students to clear their doubts quickly and understanding the topic effectively. Students who wish to score good marks in Maths practice NCERT Solutions for Class 7 Maths. NCERT Solutions for Class 7 Maths Chapter 5 – Lines and Angles of NCERT Solutions Class 7 Maths contains 2 exercises.

NCERT Solutions for Class 7 Maths Chapter 5 by Swiflearn are by far the best and most reliable NCERT Solutions that you can find on the internet. These NCERT Solutions for Class 7 Maths Chapter 5 are designed as per the CBSE Class 7 Maths Syllabus. These NCERT Solutions will surely make your learning convenient & fun. Students can also Download FREE PDF of NCERT Solutions Class 7 Chapter 5.

## NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles: EX 5.1 PDF

Question 1:
Find the complement of each of the following angles:

Solution:-

## Solution:-

Solution:-

#### Question 9:

(ii)
By observing,
No, as both the angles do not have a common vertex O and common arm OA.
Also, they have no non-common arms on both the side of the common arm.

(iii)
By observing,
Yes, as both the angles are having a common vertex i.e. O and a common arm OE.
Also the non-common arms OC and OD are on both the side of common arm.

(iv)
By observing the figure, we came to conclude that,
Yes, as both the angles have a common vertex i.e. O and a common arm OE.
Also their non-common arms OA and OB are opposite to each other.

(v)
Yes, both are formed by the intersection of two straight lines AB and CD.

#### Question13.Fill in the blanks:(i) If two angles are complementary, then the sum of their measures is_______.(ii) If two angles are supplementary, then the sum of their measures is______.(iii) Two angles forming a linear pair are _______________.(iv) If two adjacent angles are supplementary, they form a ___________.(v) If two lines intersect at a point, then the vertically opposite angles arealways _____________.(vi) If two lines intersect at a point, and if one pair of vertically oppositeangles are acute angles, then the other pair of vertically oppositeangles are __________.

Solution:-
(i) Then the sum of their measures is 90o
.
(ii) The sum of their measures is 180o
.
(iii) Supplementary Angle.
(iv) Linear pair.
(v) Equal angles
(vi) Obtuse angles

## NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles: EX 5.2 PDF

#### Question 1:State the property that is used in each of the following statements?

Solution:-
(i)
Property of corresponding angles
(ii)
Alternate interior angles property being used in this statement.
(iii)
Interior angles on the same side of transversal are supplementary angles.

(i)

(ii)

(iii)

(iv)

Solution:-