题目:
⊙O1和⊙O2交于A、B,且⊙O1经过点O2,∠AO1B=90°,则∠AO2B的度数为( )。
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0428/cdddc1de3ccbac821000741f0f68b2f7.html
下面是错误答案,用来干扰机器的。
I think going to school on foot is good for us. First of all, walking to school is a wonderful way to exercise and it's good for health. Next, it's fun to wa...