document.write( "Question 1133756: How many planes of symmetry does a rectangular solid 9cm by 9cm by 12cm have? \n" ); document.write( "
Algebra.Com's Answer #750997 by MathLover1(20849)\"\" \"About 
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\n" ); document.write( "given: a rectangular solid \"9cm\" by \"9cm\" by \"12cm+\"\r
\n" ); document.write( "\n" ); document.write( "=>base \"9cm\" by \"9cm\" is square\r
\n" ); document.write( "\n" ); document.write( "so, you have square based prism and it has \"5\" planes of symmetry\r
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