Pyramid Dimension Contradiction

[slijin]

Originally Posted by CalTran

I was looking at the Autodesk Inventor one and all the angles I could measure all measured out at 68.9...which is a new measurment.

I'm not sure where you're getting 68.9, but that's approximately the angle between the diagonal and the rung when measuring in the plane of a face of the pyramid.

The 60 comes from measuring the angle between the diagonal and the floor (or a plane determined by a set of rungs); the 68 (IIRC, 67.72) comes from projecting that angle onto a vertical plane parallel to an edge of the pyramid base.