Could you explain to me Pythagoras' theorem about triangles with a 90degrees angle and why is it used?

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The Pythagorean theorem, or xxxxxxxxxxx theorem, is a relationship xxxxxxx xxx xxxxx of x xxxxx xxxxx (90 degree) xxxxxxxxx
It's xxxxxxx as xx xxxxxxxxx
a2 + b2 x c2
xxxxx xx x xxx x xxx xxx sides of x xxxxxxxxx c xxxxx the side opposite to xxx xx degree xxxxxx xx xx xxxx xxx xxxxxxx xxxx in x xxxxx xxxxxxxxx xxxxx as a xxxxxxxxxxx The other sides, "a" and "b", xxx known as the legs xx the catheti.
Right Angle xxxxxxxx

See all x xxxxxx
The xxxxx angle is denoted xx xxx xxxxxx xxxxx xx xxx xxxxx xx
Angles x and B are xxxxx xxxxxx x their values are less than xx xxxxxxxx
xx contrast, xxxxxx angles xxx xxxxxx with values greater xxxx xx degrees. There xxx xx obtuse xxxxxx xx xxxxx angle triangles.
Pythagorean xxxxxxx xxx many more uses xxxxx xxxx xxxxxxx xxx dimensions of geometrically. There are xxxxx a few uses for the Pythagorean xxxxxxxx xxxxxxxxxxxxx architecture and xxxxxxxxxxx xxxx some xxxxxx uses from xxx formula. xx xxxx comes xxxxxx in xxxx physics xxxxxxxxx like xxxxxxx in

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