median
don steward
mathematics teaching 10 ~ 16

Tuesday, 7 December 2010

right triangle using 1 to 7

right triangle
use 1 to 7, once only, so that the lines have the same total 

prove that the line totals cannot be below 12 or above 15 prove that a line total of 14 is impossible

there are two solutions for sum = 13 and one for sums of 12 and 15 

students can be asked to find all of the solutions, once they have reveled in the glory of finding a solution of course

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