CBSE students can refer to NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles Ex 5.2 Textbook Questions and Answers are provided by experts in order to help students secure good marks in exams.

## Class 7 Maths NCERT Solutions Chapter 5 Lines and Angles Ex 5.2

**Ex 5.2 Class 7 Maths Question 1.**

State the property that is used in each of the following statements?

**Solution:
**(i) If two parallel lines are cut by a transversal then the pair of corresponding angles have equal measure.

(ii) If two parallel lines are cut by a transversal then the pairs of alternate interior angles are equal.

(iii) If two parallel lines are cut by a transversal, then the pairs of interior angles on the same side of the transversal are supplementary.

**Ex 5.2 Class 7 Maths Question 2.**

In the adjoining figure, identity:

- the pairs of corresponding angles.
- the pairs of alternate interior angles.
- the pairs of interior angles on the same side of the transversal.
- the vertically opposite angles

**Solution:**

- ∠ 1 and ∠ 5, ∠ 2 and ∠6, ∠4 and ∠8, ∠3 and ∠7
- ∠ 3 and ∠ 5, ∠ 2 and ∠8
- ∠ 3 and ∠ 8, ∠ 2 and ∠5
- ∠ 1, ∠ 3, ∠ 2, ∠ 4, ∠ 5, ∠ 7, ∠ 6 and ∠8

**Ex 5.2 Class 7 Maths Question 3.**

In the adjoining figure p || q. Find the unknown angles

**Solution:
**

**Ex 5.2 Class 7 Maths Question 4.**

Find the value of x in each of the following figures if l || m :

**Solution:**

**(i)** Since, l || m and t is a transversal.

∴ ∠x = (180° – 110°) = 70° [Corresponding angles, Linear pair]

**(ii)** if l || m and a is a transversal.

Then, ∠x = 1000 [Corresponding angles]

**Ex 5.2 Class 7 Maths Question 5.**

In the given figure, the arms of the two angles are parallel. If ∠ABC = 70°, then find

**(i)** DGC

**(ii)** DEF

**Solution:
**

**Ex 5.2 Class 7 Maths Question 6.**

In the given figures below, decide whether l is parallel to m.

**Solution:
**

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