(adsbygoogle = window.adsbygoogle || []).push({}); Geometric Constructible Numbers....

Hi, everyone.

I have a question about geometric constructible numbers.

I know that "if 'a' is constructible then [Q(a):Q]=2^n."

But I heard that its inverse is not true.

I want some counter examples about the inverse statement.

(I have checked by googling 'i' is a constructible number.)

Help...

**Physics Forums | Science Articles, Homework Help, Discussion**

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Geometric Constructible Numbers

**Physics Forums | Science Articles, Homework Help, Discussion**