Which of the following is/are Platonic solids?

Tetrahedron

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Triangular Prism

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Cube

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Octahedron

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Solution

The correct options are
A Tetrahedron
C Cube
D Octahedron
In 3D space, a Platonic solid is a convex polyhedron whose faces are all congruent regular polygons, with the same number of faces meeting at each vertex.
Tetrahedron, cube and octahedron are Platonic solids whereas triangular prism is not because all faces are not congruent regular polygons.

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