Y by
On the plane we mark
(
) straight lines passing through one point
in such a way that for any two of them there is a marked straight line that bisects one of the pairs of vertical angles, formed by these straight lines. Prove that the drawn straight lines divide full angle into equal parts.



This post has been edited 1 time. Last edited by parmenides51, Sep 17, 2024, 2:13 PM