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Class 9 Mathematics: Lines and Angles
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MCQs on lines and angles definitions and basic terms, intersecting and non intersecting lines, pair of angles, linear pair of angles, parallel lines and transversal.

Class 9 Mathematics: Lines and Angles
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25 Questions

1. Find the value of k if p || q.
2. Find the value of ∠PQR if AB || CD || EF.
3. What is the value of k if ∠BOD and ∠COE are right angles?
4. The sum of two supplementary angles is __________
5. Find the value of y if OF is the angle bisector of ∠COB.
6. From the given diagram, if a transversal intersects two parallel lines, then what is the relation between pair of alternate interior angles ∠4 and ∠5?
7. A line with two endpoints is called __________
8. Find the value of y if PR || AC.
9. Find the value of ∠QRT if PQ || SR and SR || UT.
10. Find the value of x if l || m || n and y : z = 5 : 4.
11. The sum of complimentary angles is __________
12. Find the value of ∠CAB if PQ || RS and AB ⊥ RS.
13. Find the value of x and y if line AB || CD.
14. What is the angle formed by a line?
15. From the given diagram, which is the transversal?
16. Identify the linear pair of angles from the given options.
17. Find the value of ∠5 and ∠8 if l || m and ∠1 : ∠2 = 2 : 7.
18. What will be the values of x and y if line AB || CD?
19. As shown in below diagram, if two lines l and m are parallel to third line p, then lines l and m are __________
20. From the diagram given below, if lines PQ and RS are parallel, then what is the relation between corresponding angles ∠1 and ∠5?
21. Find the value of ∠ABC if PQ|| RS.
22. What is the value of ∠COF?
23. Match the following pairs.
i) ∠1 and ∠5 I) Interior angles ii) ∠4 and ∠ II) Exterior Angles iii) ∠3 and ∠5 III) Corresponding Angles
24. From the diagram given below, if lines PQ and RS are parallel, then what is the relation between alternate interior angles ∠4 and ∠6?
25. If x is a right angle, what is true for x?

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