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A quadrilateral has angles that measure 63°, 89° and 121°. What is the measure of the fourth angle? A. 273° B. 93° C. 87° D. 27°

A quadrilateral has angles that measure 63°, 89° and 121°. What is the measure of the fourth angle? A. 273° B. 93° C. 87° D. 27°
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A quadrilateral has angles that measure 63°, 89° and 121°. What is the measure of the fourth angle? A. 273° B. 93° C. 87° D. 27°

User Metoikos
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6 votes
The answer is C. 87.
360 - (63 + 89 + 121) = 87
User Umang
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2 votes
A quadrilateral is 4 sided, which means the total degrees is 360. Add total given degrees and subtract from 360. 273 from 360=87
User Paul Keeble
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