The angle between vertices of a regular one of these shapes is approximately 109.5 degrees; that number is familiar to organic chemistry students, as molecules of methane take this shape.
The angle between vertices of a regular one of these shapes is approximately 109.5 degrees; that number is familiar to organic chemistry students, as molecules of methane take this shape. This is the only (*) Platonic solid that is its own dual and the only one in which each vertex is equidistant from the others. For ten points, name this simplest Platonic solid, a triangular solid whose name reflects the fact that it has four vertices and four faces
The angle between vertices of a regular one of these shapes is approximately 109.5 degrees; that number is familiar to organic chemistry students, as molecules of methane take this shape.
tetrahedron (prompt on (triangular) pyramid)