this post was submitted on 08 Jun 2025
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[–] ThirdConsul@lemmy.ml 1 points 2 days ago (1 children)

Thank you! But why arc CD and arc AB length should add to 2 PI? Or why does the angle COD times two is 2PI if that's what you meant?

[–] jim3692@discuss.online 1 points 2 days ago* (last edited 1 day ago)

Point (5) is not about the arcs' lengths. It's about the angle they create with the center.

Also, I never said that COD * 2 = 2π. I said (inner COD) + (outer COD) = 2π rads