Does convexity matter?
Geometry
Level
3
Are the five Platonic solids above the only regular polyhedra ?
Image credit: http://moodle.tbaisd.org/
Yes
No
No one knows
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
The Platonic solids are the only convex regular polyhedra.
However, there are four non-convex regular polyhedra, known collectively as the Kepler-Poinsot (or "star") Polyhedra:
Therefore, although its a common mis-conception, n o the Platonic solids aren't the only regular polyhedra.
Image credit: http://moodle.tbaisd.org/