4
the pyramide rectangular base has 12 sides.
One side in its base. !!!! However, a regular pentgon has five(5) equal length sides. One of those sides is the base line.
a cone has one base and a circular top... therefore it has 2 sides and one corner
A triangle has three sides in total. If it has more than three sides, it is not a triangle. One of the three sides is called the 'base' ... usually the side that the triangle is resting on.
The base has three sides.
An octagon is a plane figure. It has eight sides, but no real base.
A cone only has a base, no sides
It has six sides.
4 sides
A ___ pyramid is a pyramid with ___ as its base. In this case, we have a nonagon, a nine-sided polygon, as the base. So, if you imagine each edge of the nonagon as having one triangular side coming off of it, and all of the triangular sides meeting at a point over the base, you then have 9 sides, one for each edge, plus the base itself - 10 sides total.
2 sides, the base and the cone.
5 sides