Question

check whether L || m in each of the following figures.give reasons for your answer
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Answer 1

Answer:

yes

Step-by-step explanation:

As the interior angle pair sum is 180

by interior angle test for parallel lines

l || m

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Answer 2

Answer:

L||m

Given- 1+2=180°( By converse of Co. Int. angles)

To prove- L||M

proof- 1+3=180°(linear pair). -(1)

and 1+2=180 (Given). -(2)

Form (1) and (2)

1+3=1+2{angle 1 get crossed out}

3=2

But these angles formed corresponding pair of angles

Hence, L||M

Put angle sign after 1,2,3

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