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Pythagoras developed the theorem of the relationship between the three sides of a right (or right-angled) triangle.
His theorem is: a2 + b2 = c2
or, the square of the side opposite the right angle (this side - c - is called the hypotenuse) is equal to the sum of the areas of the squares whose sides (a and b) meet at the right angle.
The link below explains, more clearly than I, this theorem, which was discussed long before Pythagoras. Pythagoras was the one whose written description of the phenomenon went into recorded history, but he didn't claim to have invented it (and it's debatable that one can claim to invent something which already exists not simply in theory but before one's eyes).
What else can I help you with?
Why was Pythagoras interested in triangles?
Pythagoras was interested in triangles when he found out that for any right angle triangle that when its hypotenuse is squared it is equal to the sum of its two squared sides.
What theorem on triangles did Pythagoras find?
Pythagoras theorem
Does pythagoras' theorem work for all triangles?
no only right triangles
In math world what is Pythagoras famous for?
If I recall it correctly Pythagoras found the when dealing with right angle triangles, the square on the hypotenuse equaled the sum of the squares on the other two sides.
Who develop a theory about right triangles?
Pythagoras
What Pythagoras' famous theorem involve?
triangles
What shape does Pythagoras's theorem use?
Pythagoras' theorem is applicable to right angle triangles
What triangles does Pythagoras theorem include?
The Pythagorean theorem only includes right triangles
What key idea did Pythagoras propose.?
It was Pythagoras' theorem regarding the properties of right angle triangles
Is Pythagorean theorem always a right triangle?
Yes Pythagoras' theorem is applicable to right angle triangles
Who developed a theory about right triangles in ancient Greece?
Pythagoras
What sorts of shapes can you use Pythagoras rule?
right triangles
