Reply to thread

Message

Hey everyone,

Does anyone know a formula or the fastest way (without drawing i hope) to calculate the diameter of a circle, when you have the coordinates of three points on that circle.

i need to do this for 15 measurements, so i'm not gonna draw every point, make a triangle and get the center so i can calculate the diameter from there.
this picture may clarify what i mean.

thanks in advance

[QUOTE="circle3pointsguy, post: 1099246, member: 367"] Hey everyone, Does anyone know a formula or the fastest way (without drawing i hope) to calculate the diameter of a circle, when you have the coordinates of three points on that circle. i need to do this for 15 measurements, so i'm not gonna draw every point, make a triangle and get the center so i can calculate the diameter from there. [IMG]https://th.bing.com/th/id/OIP.9dc4tM4WAdE8XH0-9J1mAgHaFj?w=256&h=192&c=7&r=0&o=5&dpr=1.25&pid=1.7[/IMG] this picture may clarify what i mean. thanks in advance [/QUOTE]