document.write( "Question 397907: Given points A(0,0) B(4,8) and C(6,2) are the vertices of triangle ABC.
\n" ); document.write( "A. Show that triangle ABC is an isosceles triangle
\n" ); document.write( "B. Find the coordinates of D , the midpoint of the base.
\n" ); document.write( "C. Show that CD is perpendicular to AB
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Algebra.Com's Answer #281936 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi, previously posted.
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\n" ); document.write( "A. Show that triangle ABC is an isosceles triangle
\n" ); document.write( "B(4,8) and C(6,2) A(0,0) and C(6,2)
\n" ); document.write( "distance AB = \"sqrt%28+%28-2%29%5E2+%2B+6%5E2%29\"= distance AC = \"sqrt%286%5E2+%2B%282%29%5E2+%29\"\r
\n" ); document.write( "\n" ); document.write( "B. Find the coordinates of D , the midpoint of the base AB
\n" ); document.write( "A(0,0) and B(4,8)
\n" ); document.write( "Midpoint(\"%28x%5B1%5D+%2B+x%5B2%5D%29%2F2\", \"%28y%5B1%5D+%2B+y%5B2%5D%29%2F2\") (4/2,8/2) OR PT(2,4)\r
\n" ); document.write( "\n" ); document.write( "C. Show that CD is perpendicular to AB
\n" ); document.write( " m of CD = \"%284-2%29+%2F%28+2-6%29+=+2%2F-4+=+-1%2F2\"
\n" ); document.write( " m of AB = 8/4 = 2
\n" ); document.write( " SLOPES negative reciprocals, lines perpendicular
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