Question

If the sum of two adjacent angle is 180 °.... prove that the outer arms of the angles are on the same line... (only one person should give the answer)​

Answer 1

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Prove that if the sum of two adjacent angles is 180∘, then the non-common arms are two opposite rays. ... It is given in the question that the sum of two adjacent angles is ${{180}^{{}^\circ }}$ then we have to prove that their non-common arms are two opposite rays. Basically rays means, straight line having no end point.

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