## Pythagoras theorem, demonstration – one of many – extra

**Pythagoras theorem, demonstration – one of many**

**Pythagoras theorem, demonstration – one of many**

**Proof that:**

**For this demonstration we are going to use the same drawing as the one used in the previous page:**

**To demonstrate that those triangles are equal is enough to show that ****all triangles have one side equal and the two adjacent angles with that side equal as well.**

**1. all four triangles have one of the side equal:**

**This side is the hypotenuse of the right triangle and it is a given value (the side of the smaller square).**

**2**. **(angle rays, sides of the triangles, are perpendicular to each other)**

**3**. **(angle** rays**, sides of the triangles, ****are perpendicular to each other)**

**This means that:**

**Pythagoras theorem, demonstration – one of many**

**Pythagoras theorem, demonstration – one of many**

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