How many sides does a tetrahedron have? 4 SIDES (also known as a triangular pyramid, it has four triangular faces, six straight edges, and four vertex corners.)

Pentagon? 5 SIDES

Hexagon? 6 SIDES

How many sides does a cube have? 6 SIDES (it has 6 faces, 12 edges, and 8 vertices.)

Heptagon? 7 SIDES

How many sides does a British 20 pence piece have? 7 SIDES (It is an equilaterally curved heptagon.)

How many sides does a British 50 pence piece have? 7 SIDES

Octagon? 8 SIDES

Nonagon? 9 SIDES

Decagon? 10 SIDES

Dodecagon? 12 SIDES

How many sides does the British new pound coin have? 12 SIDES

Triskaidecagon? 13 SIDES

Icosagon? 20 SIDES

Pentacontagon? 50 SIDES

Hectagon? 100 SIDES

Chiliagon? 1,000 SIDES

Myriagon? 10,000 SIDES

And finally, how many sides does a Megagon have? 1,000,000 SIDES