Five angle of a hexagon have measure have measure 100 degree, 110 degree, 120 degree, 130 degree, and 140 degree. What is the measure of the sixth angle?
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Solution
Dear student
Let the sixth angle be x.
Then,
By angle sum property of hexagon
=>100+110+120+130+140+x=720
=>600+x=720
=>x=120
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