IT'S MY BIRTHDAY
Ann hopes you can come to her birthday!
Time
Twenty to six in the afternoon
Date
Monday, July 14th
Place
Flat 9B West Wing Tower
Phone
875-4615
Note
The more friends, the better.
已知:如图所示,在平面直角坐标系xOy中,∠C=90°,OB=25,OC=20,若点M是边OC上的一个动点(与点O、C不重合),过点M作MN∥OB交BC于点N.