This is an Octahedron!
A three-dimensional shape with eight triangular faces is called an octahedron.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
The parallel faces of a triangular prism are both shaped like triangles. These triangular faces are congruent, meaning they have the same size and shape. The other three faces of the prism, which connect the corresponding sides of the triangles, are rectangular.
One square or rectangle as it's base, and the other sides are triangles.
The shape with five faces, two of which are triangles and three are rectangles, is known as a triangular prism. In this three-dimensional figure, the two triangular faces are parallel to each other, while the three rectangular faces connect the corresponding sides of the triangles. This shape is commonly encountered in geometry and is often used in various applications, including architecture and design.
the sides of a pyramid are triangles
None it is impossible.
A pyramid.
A triangular prisim (3 faces on sides, one face on bottom).
A three-dimensional shape with eight triangular faces is called an octahedron.
Icosahedron are a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles.
The parallel faces of a triangular prism are both shaped like triangles. These triangular faces are congruent, meaning they have the same size and shape. The other three faces of the prism, which connect the corresponding sides of the triangles, are rectangular.
TetrahedronEhm, I believe the answer would be a pyramid.
triangle and square 4 triangles one square
This is an impossible shape. The only 3-d shape with 4 plane faces is a tetrahedron (triangular pyramid). While its base is a triangle, all of its other faces are also triangles and so cannot have parallel sides.
One square or rectangle as it's base, and the other sides are triangles.
An icosahedron is a shape with 20 faces, 30 edges and 12 vertices. All the faces are triangles. icos is Greek for 20