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Class 9 Mathematics: Lines and Angles
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Avg score: 12% • Most missed: “Find the value of ∠x if line l || m and line n || p. |”

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 ∠x if line l || m and line n || p.
2. What will be the values of x and y if line AB || CD?
3. Find the value of ∠1 and ∠2 if line p || q and ∠1 = 5x – 26°, ∠2 = 2x + 10° .
4. If x is an acute angle, then what is true for x?
5. Find the value of x if p || q.
6. Find the value of ∠QRT if PQ || SR and SR || UT.
7. Find the value of ∠BOD if ∠AOD : ∠AOC = 4 : 5.
8. Find the value of k if line l || m || n.
9. From the given diagram, which is the pair of corresponding angles?
10. Find the value of y if OF is the angle bisector of ∠COB.
11. How many endpoints does a ray have?
12. From the diagram given below, if lines PQ and RS are parallel, then what is the relation between alternate interior angles ∠4 and ∠6?
13. Find the value of k in line l || m?
14. Find the value of x if l || m || n and y : z = 5 : 4.
15. What is the value of k if ∠BOD and ∠COE are right angles?
16. From the given diagram below, which pair do angles POR and ROQ form?
17. Find the value of k if ∠POQ and ∠POR form a linear pair.
18. From the diagram given below, if lines PQ and RS are parallel, then what is the relation between corresponding angles ∠1 and ∠5?
19. What is the angle formed by a line?
20. Find the value of y if AB || CD.
21. 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?
22. Find the value of k if ∠1 = 150 – k and ∠2 = 60 + k and line l || m.
23. If x is a right angle, what is true for x?
24. If x is an obtuse angle, then what is true for x?
25. Find the value of x, y and z if y : z = 2 : 3 and AB || CD.

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