A star
It is a rectangular based pyramid that would fit the given description.
you can make a square based pyramid using 4 triangles and a 1 square
A square is a 2 dimensional shape, but it can be divided into 2 or more triangles, or more smaller squares, or hexagons and triangles, or octagons and triangles, or really any rectilinear figure and triangles. If you mean what two dimensional shapes can compromise the surface of a cube, or rectangular prism, then you want squares. if you mean what 1 dimensional figures can make the perimeter of a square, then you want lines (straight lines).
A square pyramid (like the Egyptian ones), which has 4 triangles as sides.
A star
A pyramid.
A square-based pyramid
Its name is called a square based pyramid.
The simplest pattern is 2n+1, so the 16th figure will have 33 triangles. Of course, if you are creating new triangles and also keeping the old triangles, this would be different.
Square pyramid.
The figure is a square pyramid. It is made with a square on the bottom and 4 triangles meeting at a vertex perpindicular to the square. The square has 1 face, the 4 triangles each have one face making 5 faces. The edges are made where the triangles meet each other and where they each meet the square. There are four vertices at the corners of the square and the one at the top of the pyramid.
a square* * * * *A square does not have only 1 vertex: it has 4.The correct answer is an infinite cone.
It is a rectangular based pyramid that would fit the given description.
have 2 triangles put together to form a square, the medium triangle will go on top of the square, like a roof to a house....
you can make a square based pyramid using 4 triangles and a 1 square
4 faces are triangles and 1 face is a square the square face is the base of the pyramid