What’s the Pythagorean Theorem?
In a right triangle, the equare of the length of the hypotenuse is equal to the sum of the squares of the lengths of the other two sides.
Pythagorean Statement #1
If the figure is a right triangle, then c^2=a^2+b^2
Pythagorean Statement #2
If c^2=a^2+b^2, the triangle is a right triangle.
Direct Measurement
Taking exact measurements with tools
InDirect Measurement
Using other known measurements to find an unknown one