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.
triangle
It is called a "triangle" I know, not very imaginative is it?
It is an equilateral triangle
A triangle with no equal sides is called a Scalene Triangle.
at the top. The "base" of a triangle is arbitrary.
A house or a pentagon
first line indent marker
The shape that looks like a triangle with a flat top is called a trapezoid. A trapezoid is a quadrilateral with at least one pair of parallel sides. In this case, the parallel sides are the top and bottom of the trapezoid, giving it the appearance of a triangle with a flat top.
The apex, and the shape of the base does not make a difference to what it is called.
An irregular pentagon. ( a rectangle with a triangle on top of it)
triangle
A triangle.
Fold your paper the hot dog way and then get the top left corner and fold intil there is a triangle at the top and unfold do the same thing with the right side.There should be a triangle at the top this is called a squash fold. There should be two flapson the sides of the triangle push them up.Take the bottom of the rectangle and fold it in half so that the top of it touches the triangle. Take the biggest flap and fold it down. Flip it over and its done!
A right angle triangle
Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle!Yes. That is why it is called a right angle triangle!
inscribed triangle
An inscribed triangle.