+468 
+816 
+4 
+4 
+382 Oct 6, 2018
+1206 +1206 +1206 +1206 +1206 +1206 How many different non-congruent isosceles triangles can be formed by connecting three of the dots in a square array of dots like the one shown below?
dot((0,0));dot((0,1));dot((0,2));dot((0,3));
dot((1,0));dot((1,1));dot((1,2));dot((1,3));
dot((2,0));dot((2,1));dot((2,2));dot((2,3));
dot((3,0));dot((3,1));dot((3,2));dot((3,3)); <#> Two
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+188 +1206 
+55 
+107 
+693 +1206 +188
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