Triangle
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Totally wrong. A triangle is not a solid, nor does it have six faces.
There are numerous possible answers:
A pentagon based pyramid,
A quadrilateral based prism, a rhombohedron, a parallelepiped.
A triangular dipyramid.
six faces
A cube has six square faces.
A cube
It is called a hexagon because it has six faces and also six vertexes.
A cube has six faces (sides).
six faces
A solid with six congruent square faces is a cube.
A cube has six square faces.
A cube
A hexahedron is a solid with six plane faces, and a cuboid is a six-sided figure each face of which is a rectangle.
It is called a hexagon because it has six faces and also six vertexes.
its a hexagon that has 6 faces
A cube has six faces (sides).
Hexahedron
A rectangular prism.
Rectangular parallelepiped
cubes and cuboids