Similar: Unlucky tiling: Arrange thirteen right isosceles triangles into a square
Five graded difficulty isosceles right triangle into square tilings
Two difficult "Seventeen right isosceles triangles into a square" tilings
The challenge is to fit the smallest 20 integer-sided scaled right isosceles triangles into a square with diagonal 46
For convenience, I list the areas of the triangles:
1,2,4,8,9,16,18,25,32,36,49,50,64,72,81,98,100,121,128,144
There are four ways of doing it (not two as originally posted). A brave person it would be who tackled this by hand.
By way of illustration/clarification, here are the right isosceles triangles of area
1,2,4,9,16,18,50
arranged into a 10×10 square:
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