????????????? chord & vertikal WOT ????????????
Yu draw a wedj from serkel senter tu 2 points on the rim av the serkel
This form a triangel with the chord as 1 side
other 2 sides=radius
yu mite wanna suppli the hite av the triangel
this assume yu make it so bisekter av angel at serkel senter is vertikal
so vertikal line split triangel intu 2 identikal rite trinagels with its base=(chord/2)