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The three angles of a quadrilateral are 90°, 115°, and 85°. What is the measure of the fourth angle? A) 65° B) 85° C) 75° D) 70°
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The three angles of a quadrilateral are 90°, 115°, and 85°. What is the measure of the fourth angle? A) 65° B) 85° C) 75° D) 70°

User Techno Buzz
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1 Answer

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Answer: D 70

Explanation:

angle sum property of quadrilateral =
360degrees so, 90+115+85+x=360
290+x=360
×=360-290
×=70
therefore forth angle of quadrilateral=70 degrees
User Gezhonglunta
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