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(本题6分)如图,在△ABC中,BC="12cm," AB="AC," ∠BAC=120°
(1)作的外接圆(只需作出图形,并保留作图痕迹);
(2)求它的外接圆直径.
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(本题6分)如图,在△ABC中,BC="12cm," AB="AC," ∠BAC=120°
(1)作的外接圆(只需作出图形,并保留作图痕迹);
(2)求它的外接圆直径.
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