The bottom of the triangle is typically referred to as the base of the triangle. All triangles have a base.
The baseline
It's called a pyramid!
Bottom of a triangle
Yes, though generally speaking the bottom, horizontal side (if any) of a triangle is called its base.
pentagonal triangle
Technically, triangles don't have tops or bottoms; triangles are rotatable abstractions. Each of the three lines is called a side and each of the three corners is called a vertex. In more friendly real-world terms, if a triangle is oriented with a side at the "bottom", then the "top" is a vertex; in this case one might call the "bottom" the triangle's base and call the corner at the "top" the vertex opposite the base. If a triangle is oriented with a vertex at the "bottom", then the "top" could be a side or it could be another vertex depending upon the exact shape of the triangle.
well, it depends is it a triangle on the bottom, or is it a square? if it is a triangle on the bottom, it has 3, + the bottom is 4, if it is a square bottom then it has 4 siides + the bottom is 5.
it is at the bottom
Why yes it is possible in fact it's called the "Right Triangle" It has one right angle at the bottom and to other angles lower then 90˚
The tri-tip roast, sometimes called a triangle roast, is the portion of meat that is at the bottom of sirloin.
Its base.