1. ©G Dear 2009 – Not to be sold/Free to use
General Mathematics
Preliminary
Right
Triangles
Pythagoras
Theorem
Stage 6 - Year 11
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©G Dear 2009 – Not to be sold/Free to use

2. Pythagoras Theorem (1/4)
Only applies to Right-Angled Triangles
The longest side is called the
Hypotenuse.
Shorter
Sides

3. Pythagoras Theorem (2/4)
c2 = a2 + b2 c2 a2
Youtube
Video
Press b2

4. 13.1 Pythagoras Theorem (3/4)
Finding the Hypotenuse
c2 = a2 + b2
c2 =
c2 =
c2 = 169 c2
c = 13 5 a2 12 b2

5. Pythagoras Theorem (4/4)
Finding the Shorter Side
c2 = a2 + b2
172 = a
289 = a
-225
-225
64 = a2 17 c2 a2
a = 8 15 b2