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In a pair of adjacent angles, (i) vertex...

In a pair of adjacent angles, (i) vertex is always common, (ii) one arm is always common, and (iii) uncommon arms are always opposite rays
Then

A

All (i), (ii) and (iii) are true

B

(iii) is false

C

(i) is false but (ii) and (iii) are true

D

(ii) is false

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NCERT EXEMPLAR-LINES AND ANGLES -Exercise
  1. In Fig. 5.23, if QP || SR, the value of a is

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

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

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

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

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  6. Vertically opposite angles are always

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

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

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

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

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

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

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

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  14. In Fig. 5.31, PQ||ST. Then, the value of x + y is

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  15. In Fig. 5.32, if PQ||RS and QR||TS, then the value a is

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  16. If a transversal intersects two parallel lines, then sum of interior...

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  17. If a transversal intersects two parallel lines, then alternate inte...

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  18. If a transversal intersects two parallel lines, then corresponding ...

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  19. If a transversal intersects two parallel lines, then alternate inte...

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  20. Two lines in a plane which do not meet at a point anywhere are called...

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