<Tr> <Td_colspan="2"> Key (shaded lane or restricted area) width </Td> <Td> 16 ft </Td> <Td> 4.88 m </Td> <Td> 16.08 ft </Td> <Td> 4.9 m </Td> <Td_colspan="2"> Same as NBA </Td> <Td> 12 ft </Td> <Td> 3.66 m </Td> <Td_colspan="4"> Same as NCAA </Td> </Tr> <Tr> <Td_colspan="2"> Free - throw line distance from point on the floor directly below the backboard </Td> <Td> 15 ft </Td> <Td> 4.57 m </Td> <Td> 15.09 ft </Td> <Td> 4.6 m </Td> <Td_colspan="8"> Same as NBA </Td> </Tr> <P> * The NBA three - point line is 3 ft (0.91 m) from the sideline in a zone starting at the baseline and ending when it crosses the 23.75 ft (7.24 m) arc . The 22 ft (6.70 m) measurement applies only at a point where a line parallel to the baseline intersects the long axis of the court and the center of the basket . </P> <P> † The FIBA three - point line is 2.95 ft (0.90 m) from the sideline in a zone starting at the baseline and ending when it crosses the 22.1 ft (6.75 m) arc . The 21.65 ft (6.60 m) measurement applies only at a point where a line parallel to the baseline intersects the long axis of the court and the center of the basket . </P>

Where do you measure the three point line from