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Behold, a square (sopuli.xyz)

submitted 4 days ago by [email protected] to c/[email protected]

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[–] [email protected] 90 points 4 days ago (2 children)

And that the 90 degree angles should be interior angles.

[–] [email protected] 45 points 4 days ago (2 children)

And that polygons should only consist of straight lines.

[–] [email protected] 0 points 5 hours ago

geodesics

[–] [email protected] 34 points 4 days ago

Yes sure, in Euclidean geometry, but this is clearly keyhole shaped geometry.

[–] [email protected] 12 points 4 days ago (1 children)

They're also not actually right angles, as the curvature starts departing from the angles origin. They may be approximately 90, down to many many small decimal places, but they are not 90.

[–] [email protected] 22 points 4 days ago* (last edited 4 days ago)

That's not accurate. If you are measuring the angle of a line intersecting with a curved surface, you measure against the tangent at the point of contact/intersection. It can be and still is exactly 90 degrees.