(i) and (iii) are correct
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(ii) and (iii) are correct
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(ii) and (iv) are correct
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Suggest Corrections
2
Let us draw the following diagram showing two straight lines AD and BC intersecting each other at a point O.
Now, let us consider each statement one by one:
(i) When two lines intersect adjacent angles are complementary.
This statement is incorrect
Explanation:
As the adjacent angles form a linear pair and they are supplementary.
(ii) When two lines intersect adjacent angles are supplementary.
This statement is correct.
Explanation:
As the adjacent angles form a linear pair and they are supplementary.
(iii) When two lines intersect opposite angles are equal.
This statement is correct.
Explanation:
As the vertically opposite angles are equal.
(iv) When two lines intersect opposite angles are supplementary.
This statement is incorrect.
Explanation:
As the vertically opposite angles are equal
Thus, out of all, (ii) and (iii) are correct.