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Plane Geometry is about flat shapes like lines, circles and triangles , shapes that can be drawn on a piece of paper

13 votes

Two queries on triangles, the sides of which have rational lengths

On the second question: There is the inequality $12\sqrt{3}A\leq P^2$ that needs to be satisfied first of all to get a triangle. Using Heron's formula for a triangle with sides $x$ and $y$, you are …
Chris Wuthrich's user avatar