Question

in following figure if x+y = y+x then that AOB is line​

Answer 1

Step-by-step explanation:

as given X + y = w + z

to prove a ab is a line or X + y = 180° ( linear pair )

according to the question

X + y + w + z = 360° ( angle around a point )

( X + y) + (w + z) = 360° ( given X + y = w + z )

2(x + y) = 360°

(X + y) = 180°

hence X + y make a linear pair

therefore a ab is a straight line

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Answer 2

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