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In Fig. 5.19, angleROS is a right angle...

In Fig. 5.19, `angleROS` is a right angle and `anglePOR` and `angleQOS` are in the ratio 1 : 5. Then, `angleQOS` measures

A

`150^(@)`

B

`75^(@)`

C

`45^(@)`

D

`60^(@)`

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NCERT EXEMPLAR-LINES AND ANGLES -Exercise
  1. In Fig a and b are

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  2. If two supplementary angles are in the ratio 1 : 2, then the bigger an...

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  3. In Fig. 5.19, angleROS is a right angle and anglePOR and angleQOS a...

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  4. Statements a and b are as given below: a : If two lines intersect, t...

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  5. For Fig. 5.20, statements p and q are given below: p : a and b are f...

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  6. In Fig. 5.21, angleAOC and angleBOC form a pair of

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  7. In Fig. 5.22, the value of a is

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  8. In Fig. 5.23, if QP || SR, the value of a is

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  9. In which of the following figures, a and b are forming a pair of adjac...

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  10. In a pair of adjacent angles, (i) vertex is always common, (ii) one ar...

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  11. In Fig. 5.25, lines PQ and ST intersect at O. If anglePOR = 90^(@) an...

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  12. In Fig. 5.26, POQ is a line, then a is equal to

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  13. Vertically opposite angles are always

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  14. In Fig. 5.27, a = 40^(@) . The value of b is

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  15. If an angle is 60^(@) less than two times of its supplement, then the ...

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  16. In Fig. 5.28, PQ || RS. If angle1=(2a+b)^(@) and angle6=(3a–b)^(@), ...

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  17. In Fig. 5.29, PQ||RS and a : b = 3 : 2. Then, f is equal to

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  18. In Fig. 5.30, line l intersects two parallel lines PQ and RS. Then, wh...

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  19. In Fig. 5.30, which one of the following is not true?

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  20. In Fig. 5.30, which of the following is true?

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