The answer is: Sphere and Right cylinder.
The explanation for this answer is shown below:
By definition, the numbers of planes of symmetry depends of each solid (a figure of three dimensions). The plane of symmetry divides the solid into two congruent halves which have mirror images.
Based on the information above, a cube has nine plane of symmetry, a square pyramid has four planes of symmetry, the hexagonals prims have thirteen and the spheres a cylinders have infinite number of plane of symmetry.
