The flag of São Tomé and Príncipe has a red triangle on the left with three horizontal bands of green, yellow and green. It has two black stars representing the two islands. Green signifies the ...

So, the two red triangles are not congruent; nor are the two dark green triangles. Sleazy. Euclid can rest in peace. Thanks to Andre Routh for this explanation. The paradox is originally due to Paul ...

The slogan “Jews for Palestine” and an inverted red triangle appeared Monday on Chabad of Squirrel Hill, walking distance from Tree of Life, the synagogue complex where a white supremacist ...