Pre-requisite:

1. Base spacial concepts.

Objectives:

1. Given a Right triangle
2. Knowing the length of either 2 of 3 sides
3. Calculating the other side of the triangle

Descriptions:

1. Refer to : http://www.mathsisfun.com/pythagoras.html

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   src http://www.mathsisfun.com/pythagoras.html width 980 height 600

2. Other reference : http://en.wikipedia.org/wiki/Pythagorean_theorem