document.write( "Question 1057486: frank is at a meeting to review his selections for the committee Frank remembers clearly that everyone shook hands with everyone else and that there were exactly 105 handshakes, but can't remember how many people were at the meeting. How many were there? \n" ); document.write( "
Algebra.Com's Answer #672529 by josgarithmetic(39620)![]() ![]() ![]() You can put this solution on YOUR website! This is a very famous and common instructional example. Look for information on it for your level. Use the vertices of regular polygons, starting with triangle, and work upward, counting the number of all diagonals and sides for each figure. \n" ); document.write( " |