Geometry
"All The Mathematical Methods I Learned In My University Math Degree Became Obsolete In My Lifetime" - Keith Devlin
Proposition 1 The construction of an equilateral triangle from a given line segment: (https://www.desmos.com/geometry/y0svphvz3g)
Proposition 2 Given a line segment AB and a point X, a line segment with X as an endpoint with the same length as AB. : (https://www.desmos.com/geometry/qvbcoecsxo)
Proposition 2 Given a line segment AB and a point X, a line segment with X as an endpoint with the same length as AB. : (https://www.desmos.com/geometry/qvbcoecsxo)