A classic bar challenge using 10 coins arranged in a triangle. The goal is to flip the triangle upside down by moving only ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. The first result for a Google search of “upside down red triangle” is a Wikipedia ...

Facebook on Thursday removed Trump campaign ads and posts featuring an upside down red triangle, a symbol that was used in Nazi Germany to mark political prisoners in concentration camps. The Trump ...

We can flip this triangle made of coins, from one pointing upwards to one pointing downwards, by moving three of the coins (coloured dark blue), as shown in the image below. However, it is also ...