已知线段CD,延长CD到B,使DB=1/2CD,延长DC到A,使AC=2DB,若AB=10cm,则CD=多少厘米?AC=多少厘米?

题目

已知线段CD,延长CD到B,使DB=1/2CD,延长DC到A,使AC=2DB,若AB=10cm,则CD=多少厘米?AC=多少厘米?

答案

易知AC=2DB=CD,所以AB=5BD=10 BD=2所以AC=CD=2BD=4cm
给个采纳呗,谢啦