List questions from axiomatic-geometry | MathQA

How can the dihedral angle (i.e. the angle between two planes) be defined sans a coordinate system?

Published on 07 Jun 2022 - 9:57

Is there a standard notation for the plane passing through three non-collinear points?

Published on 14 Jun 2022 - 7:45

Can it be derived from Hilbert's axioms that every plane contains a set of non-collinear points?

Published on 15 Jun 2022 - 19:25

Intersections of lines formed by the pentagon are collinear.

Published on 11 Aug 2022 - 13:17

Conditions for realizability of finite incidence structures in Euclidean plane

Published on 12 Aug 2022 - 9:53

Different axioms for Euclidean geometry and other bodies of knowledge

Published on 13 Aug 2022 - 1:24

Verify the Betweenness Axioms of Analytic Beltrami-Cayley-Klein Plane

Published on 05 Sep 2022 - 6:20

Why can't we prove Euclid's fifth postulate from propositions 27 and 29?

Published on 01 Oct 2022 - 5:58

Trouble proving that a plane in (synthetic) projective space containing two points must contain the line between them

Published on 11 Oct 2022 - 22:17

Did Pasch and Peano use models for their axiomatic systems in geometry?

Published on 16 Dec 2022 - 21:50