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Published 20 hours ago • verified publisher icon mathigon

Sum of quadrilateral angles should always be 360°

Open plegner opened this issue 6 years ago • 3 comments

At the beginning of Polygons and Polyhedra, rounding errors can mean that the four angles in the quadrilateral don't actually add up to 360°. We should probably set the last angle to 360° – rounded other angles.

It is also possible to turn the quadrilateral "inside out":

plegner avatar Apr 21 '18 13:04 plegner

Might seems strange if the last angle change when moving other point.

DegrangeM avatar Dec 26 '19 12:12 DegrangeM

There is issue with 90° angle i assume related with this fix.

  • [ ] The right angle mark can appear for 91° angle

  • [ ] The right angle mark can be missing for 90° angle

DegrangeM avatar Mar 30 '20 12:03 DegrangeM

What is the current status of this issue? I am interested in becoming a contributor to this project, and this issue seemed like an OK place to jump in. Should I start here or is there a better issue to tackle to get more familiar with the project?

nigel-f-wilson avatar Jun 05 '22 15:06 nigel-f-wilson