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\angle A + \angle B + \angle C + \angle D + \angle E + \angle F |
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Answer» In triangle ABE and triangle DCF,ANGLE A+ANGLE B+ANGLE E=180(ANGLE SUM PROPERTY)-(1)ANGLE D+ANGLE C+ANGLE F=180(ANGLE SUM PROPERTY)-(2) (1)+(2)ANGLE A+ANGLE B+ANGLE E+ANGLE D+ANGLE C+ANGLE F=180+180ANGLE A+ANGLE B+ANGLE C+ANGLE D+ANGLE E+ANGLE F=360 |
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