PYTHAGORAS THEOREM

1
Tuesday, 24 November 2009
PYTHAGORAS THEOREM

• Objectives
• Understand the Idea
• Find the Unknown Side of a Right Angle Triangle

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The Idea
3
Draw a right angle triangle with one side 3
squares long and the other 4 then investigate the
area of the big square
?
4
5
The area of the big square is 25. 25 9 16 52
32 42
5
25
5
3
5
4
5
The area of the big square is 25. 25 9 16 52
32 42
5
3
4
6
This relationship gives the rule
?
6
a
c
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?2 62 82 ?2 36 64 ?2 100 ?2 Sq. Rt.
100 ? 10
b
a2 b2 c2