karen-hunt_60ada3fcb9d01
karen-hunt_60ada3fcb9d01
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â î = 2*â ê = (â + (2*â))/2 ê = (3*â)/2 â + (3/2)*â + 2*â = 180° â*(1 + (3/2) + 2) = 180° â*(2 + 3 + 4)/2 = 180° â*(9/2) = 180° â = 40° <== a resposta ê = (3*(40°)/2 ê = 60° î = 2*40° î = 80°