a triangular pyramid
How about a cube or a square based pyramid
cone
Cone
pyramid
When you place two square-based pyramids square to square, they form a shape known as a bipyramid. This configuration results in a three-dimensional shape with a square base and two apexes, one above and one below the base, connected by triangular faces. The overall shape resembles a diamond or a double-pointed figure.
prism
A pyramid with a square base is called a square pyramid. It is a three-dimensional shape that has a square as its base and four triangular faces that meet at a point called the apex.
A square based pyramid is a three dimensional shape with a square base, and four triangles (one from each side of the base) that meet at a point above the base. The shape has 5 vertices, 5 faces and 8 edges.
How about a cube or a square based pyramid
cone
Cone
pyramid
When you place two square-based pyramids square to square, they form a shape known as a bipyramid. This configuration results in a three-dimensional shape with a square base and two apexes, one above and one below the base, connected by triangular faces. The overall shape resembles a diamond or a double-pointed figure.
A pyramid.
A cone is a three-dimensional shape. It has a circular base and tapers smoothly to a point called the apex. This shape occupies space and has depth, height, and width, distinguishing it from two-dimensional shapes, which only have length and width.
A triangle with a square base is not a standard geometric term, but it can be described as a triangular prism if referring to a three-dimensional shape with a triangular top and a square base. If you mean a two-dimensional figure, it might be more accurately described as a right triangle or an isosceles triangle depending on the specific dimensions and angles. In general, the combination of a triangle and a square base does not have a specific name.
Square-based pyramid nets are two-dimensional representations of a three-dimensional square-based pyramid. They consist of a square base and four triangular faces that connect to a single apex point above the base. When cut along certain edges and flattened out, these nets can be laid out in a plane, typically resembling a cross shape with the square base at the center and the triangles extending outward. These nets are commonly used in geometry to help visualize and construct three-dimensional shapes.