naomiq
naomiq
25-05-2017
Mathematics
contestada
angles of quadrilateral
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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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