• 如图,在直三棱柱ABC-A1B1C1中,底面为直角三角形,∠ACB=90°,AC=6,BC=CC1=,P是BC1上一动点,则CP+PA1的最小值是 :middle;" src="http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12320/swd00588715.gif"> ;试题及答案-填空题-云返教育

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      如图,在直三棱柱ABC-A1B1C1中,底面为直角三角形,∠ACB=90°,AC=6,BC=CC1,P是BC1上一动点,则CP+PA1的最小值是         :middle;" src='http://tikucommon-zs.oss-cn-beijing.aliyuncs.com/tiku/source/image/12320/swd00588715.gif'>

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