an octagan has two equal angles each 120° and all the remaining six angles are equal . find the measure of each of the six equal angles
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according to question
120+120+x+x+x+x+x+x=720
240+6x=720
6x=720-240
6x=0480
x=480÷6
x=80
120+120+x+x+x+x+x+x=720
240+6x=720
6x=720-240
6x=0480
x=480÷6
x=80
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