Talk:Constructible Length with Compass and Straightedge

I don't think this theorem is quite correct. With compass and straightedge, it is possible to construct numbers like:
 * $\sqrt {\sqrt 2} = \sqrt[4] 2$

which is not the root of any quadratic polynomial. --CircuitCraft (talk) 18:26, 20 April 2023 (UTC)


 * Good catch. Transcribed it wrong through carelessness. --prime mover (talk) 19:23, 20 April 2023 (UTC)