Question

find the fourth angle of measure of 3 angles of a quadrilateral are 82 degrees,69 degrees,121 degrees​

Answer 1

Answer:

88 degree

Step-by-step explanation:

Sum of angles of quadrilateral = 360

Let 4th angle be x.

==: x + 82 + 69 + 121 = 360

==: x + 272 = 360

==: x = 88

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Answer 2

Answer:

88degrees

Step-by-step explanation:

Sum of all the angles of a quadrilateral=360

Therefore,4th angle=360-(82+69+121)=360-272=88degree's

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