specified in intro lede that the base of a tetrahedron is a triangular base
Line 1:
Line 1:
−
A '''tetrahedron''' is a [[Pyramid|pyramidal]] [[polygon]] structure in which the base is surmounted by three triangular sides which meet at a common apex.
+
A '''tetrahedron''' is a [[Pyramid|pyramidal]] [[polygon]] structure in which a triangular base is surmounted by three triangular sides which meet at a common apex.