单选题 To get to Kaytie's house, Camilla must ride her bicycle 8 miles south and then 6 miles west. What is the shortest distance, in miles, between the two houses?
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【正确答案】 1、10    
【答案解析】To quickly answer this question, draw a figure representing Camilla's travel:
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The shortest distance between the houses is a straight line, which corresponds to the hypotenuse:
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Because this is a 3-4-5 right triangle, the hypotenuse is 10.