若直线a⊥b ，a∥c，则c____b。

答案

⊥解析:
解：∵b∥c，
∴∠2=∠1，
∵a⊥b，
∴∠1=90°，
∴∠2=90°，
∴a⊥c．
垂直于两条平行线中的一条的直线，必垂直于另一条．

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若直线a⊥b ，a∥c，则c____b。

答案

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