IOM 2016, Блиц — Задача 43

Olympiad of Metropolises, Moscow. Blitz Contest, September, 5 · 5 септември 2016 г.

Условие

Given a cube, consider diagonals of two faces such that the two diagonals share a vertex (figure).

Find the angle between diagonals.

Give the answer in degrees.

Wireframe cube with two face diagonals drawn in bold: one on the top face and one on the right face, both starting from the upper back right vertex.

Решение

Внимание: Непълно решение

В архива няма официално решение на тази задача.

Оригинал в Архива: blitz.pdf