Angles in a circle pythagoras?

I have been reading many answered problems on this website earlier today and I have been doing some recent research on the topic of "zero" and "nothing". I was trying to relate this controversial topic about "nothing" and the number zero itself to Pythagoras and possibly the magic triangles and squares... I have been trying for the past few hours but nothing comes to mind. The value of zero in mathematics it much different to the meaning of "nothing" itself in physiology and physics so I thought it could become very interesting to relate the Zero and this whole topic about the DIFFERENCE BETWEEN NOTHING AND ZERO to the history and Pythagoras.

please help me in proving pythagorean theorem

A bookcase has the dimensions 2.5meters by 1meter. Kausar wants to move it from a narrow hallway and thinks it would be easier to move it if it was turned to the carrying position. If the ceiling of the hallway is 2.7meters high, will she be able to turn the bookcase to the preferred carrying position?

a right-angled triangle with long side of (x) and short sides of (x-3) & (6). can someone please explain how to find the value of (x) ??

all of the whole number ones

The hypotenuse of a right isosceles triangle has length of 20 cm . The sum of the lengths of the other sides equals ?...

what is pythagorus themrom