Bipyramid
A "double-pyramid", made by joining a pyramid and its mirror image base-to-base.
Here is a hexagonal bipyramid. See how the middle forms a hexagon (6-sided polygon)?
And below is a pentagonal bipyramid.
They are fun to draw, try drawing an octagonal (8-sided) bipyramid and then shade it nicely.
See: Pyramid
- solve
- sort
- space
- speed
- speedometer
- sphere
- spheroid
- spiral
- spline
- spring
- spring balance
- square
- square (numbers)
- square centimeter
- square kilometer
- square matrix
- square measure
- square meter
- square millimeter
- square number
- square root
- standard deviation
- standard form
- standard form (numbers)
- standard normal distribution