document.write( "Question 422244: Discuss two important sets of concurrent lines in a triangle, name their points of concurrence and describe any important properties they possess. \n" ); document.write( "
Algebra.Com's Answer #294758 by richard1234(7193)\"\" \"About 
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The altitudes of a triangle are concurrent. So are the medians and the angle bisectors. In fact, these three even lie on a line, usually called the Euler line. Can you prove this? \n" ); document.write( "
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