Question

The angle of quadrilateral are respectively 120°,73°,80° find the fourth angle​

Answer 1

Answer:

Step-by-step explanation:

Given ,

The angles of quadrilateral are 120°,73°,80° .

So ,let fourth angle be ‘x’

We know that,

Sum of angles in a quadrilateral is 360°

=>120°+73°+80° +x° = 360°

=> 273°+x°=360°

=>x = 360-273

=> x = 87°

Therefore,the fourth angle in quadrilateral is $\bold{87°}$

Answer 2

sum of all angles of quadrilateral=360°

let fourth angle =x°

120+73+80+x=360

273+x=360

x=360 - 273

x=87°

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