document.write( "Question 838246: How long is the altitude to the base of an isosceles triangle if the sides of the triangle are 13, 13, and 10.
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Algebra.Com's Answer #504955 by LinnW(1048) $\"\"$ $\"About$

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The altitude can be determined using $\"a%5E2+%2B+b%5E2+=+c%5E2\"$
\n" ); document.write( "c = 13
\n" ); document.write( "a = altitude
\n" ); document.write( "b = (1/2)(10) = 5
\n" ); document.write( " $\"a%5E2+%2B+%285%29%5E2+=+%2813%29%5E2\"$
\n" ); document.write( " $\"a%5E2+%2B+25+=+169\"$
\n" ); document.write( "subtract 25 from each side
\n" ); document.write( " $\"a%5E2+=+144\"$
\n" ); document.write( "Take the square root of each side
\n" ); document.write( "a = 12 \n" ); document.write( "

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