Important Questions for Class 9 Maths Chapter 6

Important Questions for Class 9 Maths Chapter 6 Lines and Angles

Practice Exercise 6.1

Question 1:
The angle which is five times its supplement is:
वह कोण जो अपने संपूरक कोण का पाँच गुणा है, है:
(a) 150⁰ (b) 120⁰ (c) 75⁰ (d) 30⁰

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Question 2:
In the given figure, Find x :

Question 3:
In the figure, lines XY and PQ interest at point O. If \(\angle\)LOY = 90^o and a : b = 4 : 5, then find the value of a, b and c. Also find the reflext \(\angle\) XOQ.
आकृति में, रेखाएं रेखाएँ XY और PQ बिन्दु O पर प्रतिच्छेद करती हाई। यदि \(\angle\)LOY = 90^o और a : b = 4 : 5 है, तो a, b और c का मान ज्ञात कीजिए। प्रतिवर्ती \(\angle\) XOQ भी ज्ञात कीजिए।

Question 4:
In the figure, OP, OQ, OR and OS are four rays.
Porve that \(\angle\) POQ + \(\angle\) QOR + \(\angle\) SOR + \(\angle\) POS = 360^o.
आकृत्ति में, OP, OQ, OR और OS चार किरणे हैं।
सिद्ध कीजिए कि \(\angle\) POQ + \(\angle\) QOR + \(\angle\) SOR + \(\angle\) POS = 360^o.

Important Questions for Class 9 Maths Chapter 6 Lines and Angles

Practice Exercise 6.2

Question 1:
Find x, y, z if l ∥ m and P ∥ Q.

Practice Exercise 6.3

Question 1:
It is given that ∠XYZ = 54° and XY is produced to point P. Draw the figure from the given information. If ray YQ bisects ∠ZYP, find ∠XYQ and reflex ∠QYP.

Important Questions for Class 9 Maths Chapter 6 Lines and Angles