Tetrahedron
grabcad
My dimensions: height is 44.91mm, edges are 51.86mm.I sketched on a top plane with a polygon tool, 3 sides and inscribed circle. Then I placed an offset place and a point directly above the center point of the triangle with an inscribed circle. And last, i just used loft to connect the triangle and the point, which formed a tetrahedron.
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