如图1,A是⊙O的直径上一点,OB是和这条直径垂直的半径,BA与⊙O相交于另一点C,过点C作切线与OA的延长线相交于点D.(2)将直线DA向下平移到半径OB外,如图,那么DA=DC成立吗?说明理由.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 22:58:16
![如图1,A是⊙O的直径上一点,OB是和这条直径垂直的半径,BA与⊙O相交于另一点C,过点C作切线与OA的延长线相交于点D.(2)将直线DA向下平移到半径OB外,如图,那么DA=DC成立吗?说明理由.](/uploads/image/z/10439369-17-9.jpg?t=%E5%A6%82%E5%9B%BE1%2CA%E6%98%AF%E2%8A%99O%E7%9A%84%E7%9B%B4%E5%BE%84%E4%B8%8A%E4%B8%80%E7%82%B9%2COB%E6%98%AF%E5%92%8C%E8%BF%99%E6%9D%A1%E7%9B%B4%E5%BE%84%E5%9E%82%E7%9B%B4%E7%9A%84%E5%8D%8A%E5%BE%84%2CBA%E4%B8%8E%E2%8A%99O%E7%9B%B8%E4%BA%A4%E4%BA%8E%E5%8F%A6%E4%B8%80%E7%82%B9C%2C%E8%BF%87%E7%82%B9C%E4%BD%9C%E5%88%87%E7%BA%BF%E4%B8%8EOA%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9D.%EF%BC%882%EF%BC%89%E5%B0%86%E7%9B%B4%E7%BA%BFDA%E5%90%91%E4%B8%8B%E5%B9%B3%E7%A7%BB%E5%88%B0%E5%8D%8A%E5%BE%84OB%E5%A4%96%2C%E5%A6%82%E5%9B%BE%2C%E9%82%A3%E4%B9%88DA%3DDC%E6%88%90%E7%AB%8B%E5%90%97%3F%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1.)
xn@_ԝecǗ*)r}c6AHj.INJ.hvW}1a̙s3)KR{?ُ3G~{q#e4z*
b|!!UV]>м{gB%a3ѷՌ!VԻr($MDҗyOPUpq9/pkլ1S(hJID~O%Y4G2b+rZ4+圛$έyuwa m;]