Question

Three angles in a quadrilateral measure 58, 77, and 116, what is the measure of the fourth angle?

Answer 1

Answer:

109 degrees

Step-by-step explanation:

sum of all the angles in a quadrilateral is equal to 360 degrees

let the unknown angle = x

hence 58+77+116+x= 360

therefore X = 109 degrees

hope this is right

Answer 2

Answer:

109°

Step-by-step explanation:

Sum of all sides of quadrilateral is 360°

Let the fourth side be x

58 + 77 + 116 + x = 360°

251° + x = 360°

x = 360° - 251°

x = 109°

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