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New posts in Geometric Construction
Given $\triangle ABC$ can we construct point $O$ such that $AO\times BC=BO\times AC=CO\times AB$?
May 09, 2021
Through two given points on a circle, construct two parallel chords with a given sum.
May 09, 2021
Olympiad question: In the regular pentagon $ABCDE$, the perpendicular at $C$ to $CD$ meets $AB$ at $F$. Prove that $AE + AF = BE$.
May 08, 2021
Construct a circle tangent to sides $BC$ and $CD$ and s.t. its meetings with the diagonal $BD$ are tangent points from tangents draw from point $A$
May 08, 2021
Prove roots of $x^5 - 1$ are constructible
May 08, 2021
How to construct an equilateral triangle on 2 concentric circles
May 08, 2021
Finding angle $x$, a geometry question
May 08, 2021
What is the next number on the constructibility sequence? And what is the asymptotic growth?
May 07, 2021
Is there a geometric construction that finds the intersection of two conics, given only five points on each?
May 07, 2021
Proof without words of a simple conjecture about any triangle
May 05, 2021
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