25-05-2017
Mathematics

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angles of quadrilateral

angles of quadrilateral class=

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kphung76127 kphung76127

25-05-2017

quadrilaterals must have inner angles that add up to 360
78+82=160 360-160=200 degrees left
x+4x or5x=200 divide both sides by five to get x=40
The upper right angle is 4(40) or 160 degrees and the lower left angle us 40 degrees

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