Answer to Question #253 in Geometry for Mike

Question #253

How many symmetry planes a regular (a) octahedron, (b) dodecahedron, (c) icosahedron has?

Expert's answer

(a)The regular octahedron has 3 symmetry planes;
(b)The regular dodecahedron has 15 symmetry planes;
(c)The regular icosahedron has 15 symmetry planes;

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