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The next set of equations draws the linear line that forms the triangle in the first quadrant. I made the point (0,a) to be fixated at the endpoint of the quarter circle, so the triangular region depends on the point on the horizontal axis.
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Make sure that when adjusting the value of b, the value of a is greater than the value of b.
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Remark: You will end up obtaining 2 congruent triangular regions if the triangle is 30-60-90 or 45-45-90. This can easily be proven mathematically.
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