Other mathematical discoveries attributed to the Pythagoreans include:

• The sum of the angles of a triangle is equal to two right angles.
• Pythagoras Theorem ö The square of the hypotenuse of a right angled triangle is equal to the sum of the squares of the other two sides.
• Construction of objects of a specified area and geometrical algebra
• Discovery of the irrational numbers.
• Construction of the five regular solids

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