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Slide 2

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The theorem is simple, Pythagoras proved that if you drew a square coming off the
hypotenuse it would be the sum of the two smaller sides squares.
Does that make sense?
It really doesn't matter but what you need to know is...
a2 +b2=c2
We will get onto what this means
on the next slide.
RIGHT ANGLED TRIANGLES ONLY.…read more

Slide 3

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Hy
po
ten
a2 +b2=c2
us
e
b x
This is called hypotenuse and
c it is easy to spot because it is
the longest side.
6cm
Making any sense yet?
5cm a
Let's add some lengths.
a2 +b2=c2 Lets try it...
62+52 = c2
36+25=c2
36+25=61
Square root of 61 =7.81
=7.81…read more

Slide 4

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Sometimes it doesn't work like that.. Follow the instructions.
Hy
po
ten 1. Identify the
us
e hypotenuse
2. Use the equation
10 `a2+b2=c2'
cm
3. If it isn't that
simple rearrange
the formula.
4. Don't forget to
square root it.
5. And don't forget
4cm units.
a2 +b2=c2
c2 ­ b2 = a2
102 ­ 4 2 = a2
100 ­ 16 =84
Square root of 84 =9.2 cm
A = 9.2 cm…read more

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