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2. If two angles of a quadrilateral are 77° and 57°, and out of the remaining two anglesone angle is 10° smaller than the other, find these angles. |
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Answer» The sum of all angles in a quadrilateral is 360so..2 angles are 77 and 57let the other angle be xand the other angle be x-10sum of all angles is 36077+57+x+x-10=360124+2x=3602x=360-1242x=236x=236/2x=118°x-10=108° in a quadrilateral three angles are 55°,65° and 150° .Then find the forth angle |
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