Question

The three angles of a quadrilateral are 70 degrees 60 degrees and 108 degrees. find the measure of the remaining angle​

Answer 1

Answer:

The total angle in a quadrilateral is 360°

let the unknown angle is X

now,

X+70+60+108 = 360

Then, X= 122°

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Answer 2

Let the remaining angle be x° .

Sum of all angles of quadrilateral is 360 .

70° + 60° + 108° + x° = 360°

238° + x° = 360

x° = 360° - 238°

x° = 122°