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How many pairs of adjacent angles are ...

How many pairs of adjacent angles are formed when two lines intersect at a point?

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Two adjacent angles add up to `180^@` and supplementary to each other. So, there are 4 pairs of adjacent angles formed where two straight lines intersect each other.
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RD SHARMA-LINES AND ANGLES -All Questions
  1. An angle is equal to its supplement. Determine its measure.

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  2. An angle is equal to five times its complement. Determine its measu...

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  3. How many pairs of adjacent angles are formed when two lines intersec...

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  4. One angle is equal to three times its supplement. The measure of the...

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  5. Two complementary angles are such that two times the measure of one ...

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  6. Two straight lines A B\ a n d\ C D intersect one another at the poin...

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  7. Two straight lines A B\ a n d\ C D cut each other at Odot If /B O D=63...

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  8. Consider the following statements: When two straight lines interse...

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  9. Given /P O R=3x and /Q O R=2x+10^0dot If P O Q is straight line, then ...

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  10. In Figure, A O B is a straight line. If /A O C+/B O D=85^0, then /C O ...

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  11. In Figure, the value of y is 20^0 (b) 30^0 (c) 45^0 (d) 60^0

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  12. In Figure, if y/x=5 and z/x=4, then the value of x is (a) 8^0 (b) 18^...

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  13. In Figure, the value of x is (a) 12 (b) 15 (c) 20 (d) 30

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  14. In Figure, which of the following statements must be true? (i) a+b=d...

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  15. If two interior angles on the same side of a transversal intersectin...

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  16. In Figure, if A B||C D , then the value of x is ...

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  17. A B and C D are two parallel lines. P Q cuts A B\ a n d\ C D at E\ ...

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  18. Two lines A B\ a n d\ C D intersect at Odot If /A O C+/C O B+/B O D=27...

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  19. In Figure, P Q||R S ,\ /A E F=95^0,\ /B H S=110^0\ a n d\ /A B C=x^0do...

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  20. In Figure, if l1||l2, what is the value of x ? (a)90^0 (b) 85^0 (...

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