角aoc=25
所以角aod=180-角aoc=155
因为ef 角aod
所以角aof=角aod/2=77.5
角cof=角aoc+角aof=102.5
已知直线AB与CD相交于点O,EF平分∠DOA,∠AOC=25°,求∠COF的度数.
已知直线AB与CD相交于点O,EF平分∠DOA,∠AOC=25°,求∠COF的度数.
RT、
RT、
数学人气：977 ℃时间：2019-12-14 17:52:20
优质解答
我来回答
类似推荐
猜你喜欢
- 1《老师是这样鼓励我》600字作文
- 2l ____ ( visit ) my grandparents next week
- 3寒暑表,体温计,实验温度计为什么这样设计他们的量程与分度值
- 4小马虎在计算一道加法算式时,把加数0.58看成了5.8,计算结果是7.3,正确的和应该是?
- 5一皮带传送带以速度V1向右匀速运动.某时刻有一物体以水平速度V2从右端滑上传送带,物体有传送带之间的
- 6初中英语Basketball is such a popuiar game that ___people play it around the worid.
- 7Tom and Mike were good friends.Sometimes they were kind to each other,but sometimes they were not.Some of their classmat
- 8一个正方体的底面周长是8厘米,那么它的表面积是()平方分米,体积是()立方厘米
- 9– I think music is as interesting as art.-- _______ .I think music is very nice.
- 10帮我粘贴下高中物理所有的符号,有些我打不出...