A square and and a triangle
The base of square pyramid is a square, as you may have guessed. If you measure one side of the square base, you'll have discovered the length of a side of the base. A side squared (a side times a side) will give you the area of the base of a square pyramid. If you have the area of the base, you can find the length of a side of the base by finding the square root of the area of the base. In the case of a square pyramid, if you are given the length of a side and either a vertex angle or the angle between the base and a side, you'll have an isosceles triangle to deal with. (There are four isosceles triangles that make up the faces of the square pyramid, as you probably figured out.) This involves a bit of trigonometry, and there are some other questions here that will help you figure that out.
There are five faces in a triangular pyramid. Gosh person, use your math book! Sorry you are wrong. It depends on the base if it is a square it has 5 surfaces if the base is a triangle it has 4 surfaces. So you must examine your pyramid carefully so as not to make a simple mistake.
the base is a 2-d square with joined triangles, meeting together to make a corner at the top, the triangles height can be any height, or the square can be any size
The only thing I can come up with would be a tetrahedron. You could make a pyramid with a square (open) base, I guess.
A pyramid has a triangle for each side of the base, thus for a square pyramid you'll need one square (for the base) and 4 triangles.
Triangles (four of) and a square.One square as base and four triangles as sides.
A square and and a triangle
To make a rectangualr pyramid,you need a rectangle for the base, and four triangles on the sides.
A triangle and a square
Your base is a square and the other faces are triangles.
the base is both squares
make a square base with the four sider make 4 triangles that are on eachside
A polygon with n sides, and n triangles, where n ≥ 3. Most commonly, the polygon at the base is a triangle or a square. If the base polygon is regular and the pyramid is a right pyramid (ie apex above the centre of the basal polygon), the triangles will be isosceles.
pyramid
The base of square pyramid is a square, as you may have guessed. If you measure one side of the square base, you'll have discovered the length of a side of the base. A side squared (a side times a side) will give you the area of the base of a square pyramid. If you have the area of the base, you can find the length of a side of the base by finding the square root of the area of the base. In the case of a square pyramid, if you are given the length of a side and either a vertex angle or the angle between the base and a side, you'll have an isosceles triangle to deal with. (There are four isosceles triangles that make up the faces of the square pyramid, as you probably figured out.) This involves a bit of trigonometry, and there are some other questions here that will help you figure that out.
A 5*8 base.