Fillet curve "Circle 3pt"

Hello everybody
I want to create a fillet curve with a radius of 40 feet using the “Circle 3PT” node, but for this I need to find the point C. Can it be found using the triangle method?
Thank you.

Fillet (4.3 KB)
Fillet curve.3dm (49.8 KB)

Is this what you want?

Fillet (12.4 KB)


@akilli is using a nice approach that is close to how you would do it with circle and pen on paper…

another approach would be to use vectors, calculate length (Pythagoras) and Angles… (9.9 KB)

1 Like

One more option:
Fillet (13.6 KB)


Thank you.

Thank you