pyramid
A square is not a solid figure at all. It's a flat figure, with four congruent faces and four congruent angles.
cube!!
a cube
cube
Isosceles TetrahedronA solid with four faces is a tetrahedron. Each of the faces is a triangle. If all the triangles are congruent, you have an isosceles tetrahedron.
A cube has three pairs of parallel faces and all faces are congruent.
A cube and an equilateral triangle based pyramid
It is a cube
A cube has all of those things.
a pyramid
A cube has three pairs of parallel faces and all faces are congruent.
A cube would fit the given description