Question

In a figure x +y=w+z.then prove aob is a line

Answer 1

If x+y=w+z
x+y+w+z=360°
x+y+x+y=360°(x+y=w+z)
2(x+y)=360°
x+y=360/2
x+y=180°
Hence Proved because angle of a straight line is 180°.
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