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Three interior angles of a quadrilateral measure 55, 117 and 120 degrees. What is the measure of the fourth interior angle?

Three interior angles of a quadrilateral measure 55, 117 and 120 degrees. What is the measure of the fourth interior angle?
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5 votes
Three interior angles of a quadrilateral measure 55, 117 and 120 degrees. What is the measure of the fourth interior angle?

asked
User Ian Rodrigues
by
8.3k points

1 Answer

4 votes

4 angles = 360

120 + 117 +55 = 292

360-292 = 68

4th angle = 68 degrees

answered
User Courtenay
by
8.1k points
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