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Mathematics
Junior High
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求解

LBOC - 180 - (x+y) = 180 - 86 = 124 71 6.如右圖,若∠A=52°,∠G=74°,則∠B+<C+∠D+<E+ <F= 666度。 414 360°-52-74 12 = +34 180×5-+34 = 900-234 F B A 74°
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