Question

the two adjacent angels of a quadrilateral are 80degree and 120degree.The other two angels are equal.Find them.

Answer 1

Heyya

We know that the sum of all the angles of a quadrilateral is 360

So, first angle= 120° [given]

Second angle= 80 [given]

Third angle=Fourth angle [given]

Let the third and fourth angle be x, so

120°+80°+x+x=360°

200°+2x=360°

2x=360-200

x=160/2

x=80°

Hence, the third and the fourth angles are 80° each

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