China Naming Network - Company naming - As the picture shows, why do you draw a circle in high school mathematics?
As the picture shows, why do you draw a circle in high school mathematics?
OCE is a straight line, so | oc | :| OE | =| y 1 |: | ye |, ODF is a straight line, so.
|OD|:|OF|=|Y2|:|Yf|
(| OC |:| OE |)(| OD |:| OF |)= | y 1 y2 |:| YeYf | = 32/| YeYf |