Y by Adventure10, Mango247
We have six pairwise non-intersecting circles that the radius of each is at least one (no circle lies in the interior of any other circle). Prove that the radius of any circle intersecting all the six circles, is at least one.
Proposed by Mohammad Ali Abam - Morteza Saghafian
Proposed by Mohammad Ali Abam - Morteza Saghafian
This post has been edited 1 time. Last edited by bgn, Sep 15, 2017, 6:58 AM