Question

In the fig if l is parallel to m , angle 1 = 115 degree , find all the remaining angles​

Answer 1

$\huge\underline\mathtt\red{Aaswer : - }$

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To find:-

find whether Illm. Justify your answer

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Solve:-

It is given that l is a transversal to lines m and n. 

Also, ∠4=110° and ∠7=65°

We need check whether m∥n or not.

We have, ∠7=65°.

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Angler:-

    [ Vertically opposite angles ]

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Salvation:-

⇒  ∠7=∠5         

∴  ∠5=65°

⇒  ∠4=110°

⇒  ∠4+∠5=110°+65°

⇒  ∠4+∠5=175°

But these are the consecutive interior angles which are not supplementary.

∴  m is not parallel to n