主要内容
复习角的构建
复习用量角器构建角,然后尝试自己构建一些角。
想加入讨论吗?
- is the moon big inuf to coverd the sun(2 票)
- No, the earth is bigger than moon, and the earth is smaller than sun(2 票)
If you're seeing this message, it means we're having trouble loading external resources on our website.
如果你被网页过滤器挡住,请确保域名*.kastatic.org 和 *.kasandbox.org 没有被阻止.