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