The maths behind Paul Pogba's dab

Who'd ever thought that Manchester United's number 6 could become the subject of a maths exercise in a French school!

This is the question: Cristiano Ronaldo is jelous of Paul Pogba's dab dance, and so he try to show that the French's dance is not perfect. According to the book The Universal Declaration of the dab's rights, dab dance is perfect only when the triangles you make with your arms are actually rectangles. 

So, is Paul Pogba's dab dance perfect?

Check out his answer on Twitter:

Did you solve the problem?