The Penrose Triangle is an “impossible figure” – or so claim many reputable mathematics sources. It’s a triangle made of square beams that all meet a right angles – which does sound pretty impossible. Penrose polygons features in some of M. C. Escher’s most confounding artwork, like this picture:

But, little do these mathematicians know… you can build your own Penrose Triangle out of paper! Check out these instructions and confound your friends.

Want more optical illusions? Check out these awesome ones by scientist Michael Bach.

Mathematicians also seem pretty sure that .99999999…. = 1. Well, trust Vi Hart to show them what’s-what. Here’s a video in which she tells us all that, in fact, .99999999999… is NOT 1.

Finally, did you know that 13×7=28? Well, it does. And here’s the proof:

M.C. Escher uses the penrose triangle and other variants of the same idea in his artwork to make it unique, but what i dont understand is how it was formed and if it actually is just a basic triangle with some extra lines on it.

Skype has opened up its online-centered buyer beta on the world, after starting it extensively in the United states and U.K.

previous this calendar month. Skype for Web also
now works with Linux and Chromebook for immediate messaging interaction (no video and
voice but, these need a connect-in installment).

The increase of your beta provides support for an extended
set of languages to assist strengthen that international functionality

hahaha… that’s impossible

M.C. Escher uses the penrose triangle and other variants of the same idea in his artwork to make it unique, but what i dont understand is how it was formed and if it actually is just a basic triangle with some extra lines on it.

Skype has opened up its online-centered buyer beta on the world, after starting it extensively in the United states and U.K.

previous this calendar month. Skype for Web also

now works with Linux and Chromebook for immediate messaging interaction (no video and

voice but, these need a connect-in installment).

The increase of your beta provides support for an extended

set of languages to assist strengthen that international functionality