A right pyramid is a pyramid for which the apex lies directly above the centroid of the base. A regular pyramid is therefore a special case of a right pyramid.
Right Pyramid
See also
Pyramid, Regular PyramidExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Right Pyramid." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/RightPyramid.html