There are several: a tetrahedron with 4 equilateral triangles. An 8-sided solid (think of 2 Egyptian pyramids, turn one upside down and put the two square bases together). A 20-sided also has equilateral triangles.
A square is not a solid figure at all. It's a flat figure, with four congruent faces and four congruent angles.
a square
It is a cube.
It is a cube
A cube has all of those things.
A square is not a solid figure at all. It's a flat figure, with four congruent faces and four congruent angles.
A cube is a solid figure with eight vertices and all faces of equal size.
A cube is a solid figure called a polyhedron. A polyhedron is a solid figure with all flat faces. So a cone would be a solid figure but not a polyhedron becasue it has a curve and does not have all flat faces.
A pentagonal prism
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square
cuboid
a square
A cube and an equilateral triangle based pyramid
A pyramid
A rectangular prism.
surface area