SOLUTION: How many planes of symmetry does a rectangular solid 9cm by 9cm by 12cm have?

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Question 1133756: How many planes of symmetry does a rectangular solid 9cm by 9cm by 12cm have?
Answer by MathLover1(20849) About Me  (Show Source):
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given: a rectangular solid 9cm by 9cm by 12cm+
=>base 9cm by 9cm is square
so, you have square based prism and it has 5 planes of symmetry

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