如图,AB是⊙O的直径,AM和BN是它的两条切线,DE切⊙O于点E,交AM与于点D,交BN于点C,F是CD的中点,连接OF.(1) 求证:OD∥BE;(2)猜想:OF与CD有何数量关系?并说明理由. ( 3 ) 连接AE,OC分别交OD,BE于G,H,
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 00:32:57
![如图,AB是⊙O的直径,AM和BN是它的两条切线,DE切⊙O于点E,交AM与于点D,交BN于点C,F是CD的中点,连接OF.(1) 求证:OD∥BE;(2)猜想:OF与CD有何数量关系?并说明理由. ( 3 ) 连接AE,OC分别交OD,BE于G,H,](/uploads/image/z/8578062-54-2.jpg?t=%E5%A6%82%E5%9B%BE%2CAB%E6%98%AF%E2%8A%99O%E7%9A%84%E7%9B%B4%E5%BE%84%2CAM%E5%92%8CBN%E6%98%AF%E5%AE%83%E7%9A%84%E4%B8%A4%E6%9D%A1%E5%88%87%E7%BA%BF%2CDE%E5%88%87%E2%8A%99O%E4%BA%8E%E7%82%B9E%2C%E4%BA%A4AM%E4%B8%8E%E4%BA%8E%E7%82%B9D%2C%E4%BA%A4BN%E4%BA%8E%E7%82%B9C%2CF%E6%98%AFCD%E7%9A%84%E4%B8%AD%E7%82%B9%2C%E8%BF%9E%E6%8E%A5OF.%EF%BC%881%EF%BC%89+%E6%B1%82%E8%AF%81%EF%BC%9AOD%E2%88%A5BE%EF%BC%9B%EF%BC%882%EF%BC%89%E7%8C%9C%E6%83%B3%EF%BC%9AOF%E4%B8%8ECD%E6%9C%89%E4%BD%95%E6%95%B0%E9%87%8F%E5%85%B3%E7%B3%BB%3F%E5%B9%B6%E8%AF%B4%E6%98%8E%E7%90%86%E7%94%B1.+%28+3+%29+%E8%BF%9E%E6%8E%A5AE%2COC%E5%88%86%E5%88%AB%E4%BA%A4OD%2CBE%E4%BA%8EG%2CH%2C)
xV[oTU+&9~v`VV1I[)B\HZJ)X$!i\3'_Nko{f&r_ҳs?'r#=9v8n5JNżڞ)&Cd[zOZ']Q>k,vgD_ٚ\n[jTquً''3J-}T*q&kr
P
=dގqn0r; ;>qb=}^zU
!vlU
?xY%7r+9O}çNHX=5:^f]qǓoGMOd@!=wMaL*f&l~p@-;UD#>8!!by#t[sֵc5d klDQ⌥:q$k^(4Ei# PB{Й;$blD6`ì8KCXޚ3%ga## nibJ" $gD-AZ$AqAZyX^pڝav4Tl^6{g\\M7~پ7_)_AE.MK2\N3jgs[vkz*t|UV>]1ݚlqJv>]>X oܯƝt-l߿&mSZ1l*