Square-based pyramid.
A Triangular Pyramid has 4 triangles and 1 square.
you can make a square based pyramid using 4 triangles and a 1 square
triangle and square 4 triangles one square
pyramid
Square pyramid
a square based pyramid.
the bottom one is a square and the other 4 are triangles
Two. 4 faces are triangles and the base is a square.
square based pyramid
A square pyramid (like the Egyptian ones), which has 4 triangles as sides.
There are 4 triangles that make up a pyramid. 4 on the sides and on the bottom a square or rectangle.
4 triangles and 1 square