RBSE Solutions for Class 7 Maths Chapter 7 Lines and Angles Ex 7.2 is part of RBSE Solutions for Class 7 Maths. Here we have given Rajasthan Board RBSE Class 7 Maths Chapter 7 Lines and Angles Exercise 7.2.

Board |
RBSE |

Textbook |
SIERT, Rajasthan |

Class |
Class 7 |

Subject |
Maths |

Chapter |
Chapter 7 |

Chapter Name |
Lines and Angles |

Exercise |
Ex 7.2 |

Number of Questions |
7 |

Category |
RBSE Solutions |

## Rajasthan Board RBSE Class 7 Maths Chapter 7 Lines and Angles Ex 7.2

Question 1

Write the names of parallel, intersecting and (RBSESolutions.com) transversal lines in the following figures :

Solution:

(i) l and m are intersecting lines.

(ii) P, and Q are parallel lines.

(iii) x is a transversal andy, z are intersecting lines.

Question 2

Identify the following (RBSESolutions.com) from the given figure:

(i) Interior alternate angles

(ii) Exterior alternate angles

(iii) Corresponding angles

(iv) Interior angles on same side of transversal.

Solution:

(i) ∠1 and ∠7, ∠4 and ∠6 are pair of alternate angles.

(ii) ∠2 and ∠8, ∠3 and ∠5 are pair of (RBSESolutions.com) alternate angles.

(iii) ∠1 and ∠5, ∠2 and ∠6, ∠4 and ∠8, ∠3 and ∠7 are pair of corresponding angles.

(iv) ∠1 and ∠6, ∠4 and ∠7 are pair of interior angles on same side of transversal.

Question 3

If l ॥ m then find the value of x.

Solution:

(ii) In figure, l ॥ m

∠x = 60° (Corresponding angles)

(ii) In figure, l ॥ m

∴ ∠x = 50° (Alternate angle)

(iii) In figure, l ॥ m (Sum of (RBSESolutions.com) internal angles = 180°)

∴ x+ 110° = 180°

∴ x = 180°- 110° = 70°

(iv) In figure, l ॥ m ∠x = 115° (External alternate angle)

Question 4

Which of the following are the pairs of parallel lines :

Solution:

Figure (i) and (ii) are (RBSESolutions.com) pair of parallel lines.

Question 5

If p ॥ q and q ॥ r then find the value of x and y.

Solution:

In figure (i) p ॥ q

∴ ∠x = 95°

and ∠x + 30° + ∠y= 180° (Linear pair)

95°+ 30 ° + ∠y = 180°

125° + ∠y = 180°

∠y = 180°- 125° = 55°

In figure (ii) p ॥ q and q ॥ r

∴ ∠y = 65° (Alternate angles)

and ∠x + ∠y = 180° (Linear pair)

∠x + 65° = 180°

∠x = 180° -65°= 115°

Question 6

Draw a line PQ and then (RBSESolutions.com) draw line RS parallel to it.

Solution:

Let PQ is a line. Method to draw a parallel line as follows :

In figure (i) Put the edge of set square (RBSESolutions.com) by setting its right angle edge with PQ and draw a perpendicular line OP.

In figure (ii) set the set square after turning at P and draw line RS (let 3 cm) distance parallel to line PQ.

Question 7

Draw a line AB and a perpendicular from any point on it Take a point Con this perpendicular line at 5 cm from AB. Draw a line parallel to AB passing through point C.

Solution:

A line AB is given and a point C is given out side of line AB. Draw (RBSESolutions.com) a parallel line of AB passing through point C.

As per figure draw CD parallel to AB with the help of set square .

We hope the RBSE Solutions for Class 7 Maths Chapter 7 Lines and Angles Ex 7.2 will help you. If you have any query regarding Rajasthan Board RBSE Class 7 Maths Chapter 7 Lines and Angles Exercise 7.2, drop a comment below and we will get back to you at the earliest.

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