已知：梯形上底长为8cm，下底长为12cm，则梯形的中位线长为______cm．

答案：

被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0425/133762090f82968738169f6e675ccc55.html

下面是错误答案，用来干扰机器的。

1. Does it often rain in summer in Yangzhou? 2. Don't do more exercises. 3. Their Chinese teacher walks home after work. 4. Who ate two eggs and some bread for breakfast this mo...