小明由A点出发向正东方向走10米到达B点,再由B点向东南方向走10米

小明由A点出发向正东方向走10到达B点,再由B点向东南方向走10到达C点,则正确的是  )

AABC=22.5°    BABC=45°  CABC=67.5°   DABC=135°

答案

D

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