The leftover package

An isosceles triangle with an inscribed square and three triangles. What is the proportion black : red?

Scroll down for a solution to this problem.


Black : red is 1 : 3.

Solution by Rony Sarker.


Today many packages
We don’t need them
We should by less packaging
And just take a step in
Recycling what we are buying
Glass, paper, plastic, tin
So we can save the planet if we pitch in
And avoid leftover packaging
Especially Christmas becomes A huge challenge
We can win !


🤞 Don’t miss these puzzles!

Subscribe to the weekly geometry puzzle e-mail.

Leave a Reply

Your email address will not be published. Required fields are marked *

Optionally add an image (JPEG only)