Questions on Spherical Symmetry

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One can say a symmetric and uniform distribution of n points on a 2D circle can be simply obtained by using n identical circular sectors.

We can also say that for a 3-dimensional sphere, there exists a symmteric and uniform distribution of 4 points, which forms a tetrahedron.

While there are 5 platonic solids in 3D, I was guessing that a 'good symmetric' distribution can only be achieved with these 5 orientations.

Here are my questions.

  1. Is it possible to place 5 points on a 3D sphere so that they are symmetrical? How about n points?

(By 'symmetrical', it has to be possible to rotate the sphere to match the previous 'shape' but the name of the points should be different)

  1. What happens if the problem is extended to a k-dimensional sphere?

You may change/modify the definition of symmetrical distribution if that makes this question clearer.

P.S. I am sorry but my english is not that good, so it might be hard to understand my words here. Also, I would prefer elementary explanations as I am a high school student though advanced solutions are also welcomed. (I will try my best to understand the solutions!)