pyramid
A square is not a solid figure at all. It's a flat figure, with four congruent faces and four congruent angles.
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
cube
A cube and an equilateral triangle based pyramid
A cube has three pairs of parallel faces and all faces are congruent.
It is a cube
A solid figure that has three pairs of parallel faces with all faces being congruent is a rectangular prism. In a rectangular prism, opposite faces are both parallel and congruent, and it consists of six rectangles as its faces. Each pair of opposite faces has the same dimensions, ensuring that all faces are congruent in shape and size.
A cube has all of those things.
A cube has three pairs of parallel faces and all faces are congruent.
a pyramid