Octahedron
A polyhedron (a flat-sided solid object) with 8 Faces.
When it is "regular" (side lengths are equal and angles are equal) it is one of the Platonic Solids.
Play with one here:
See: Polyhedron
- intercepted arc
- interest
- interest rate
- interior angle
- interpolation
- interquartile range
- intersect
- intersection
- intersection (sets)
- interval
- invariant
- inverse
- inverse operation
- inverse property of addition
- inverse property of multiplication
- investing
- irrational number
- irregular
- irregular polygon
- isometric
- isosceles triangle
- iteration
- joule
- jump strategy
- kaprekars constant