Question

32
The angles of a quadrilateral are respectively 120°, 73 degree , 80°. Find the fourth angle.​

Answer 1

Let the fourth angle be x.

Sum of all angle of a quadrilateral = 360°

120 + 73 + 80 + x = 360

273 + x = 360

x = 360 - 273

x = 87°

So the fourth angle is 87°

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Answer 2

Answer:

Total angles=360°

Let the 4th angle be x

120+80+73+x=360

273+x=360

x=360-273

x=87