The Ten Digits Of The 3-4-5 Pythagorean Triangle

3-4-5 pythagorean.jpg

The 3-4-5 Pythagorean triangle is the smallest Pythagorean triangle. It can also be represented by the digits 0 to 9.

1 – The inradius, \frac{(a+b-c)}{2} or \frac{ab}{(a + b + c)}.
2 – The indiameter, a+b-c.
3 – The short leg, a.
4 – The long leg, b.
5 – The hypotenuse, c.
6 – The area, \frac{ab}{2}.
7 – The sum of the legs, a+b.
8 – The short leg plus the hypotenuse, a+c.
9 – The long leg plus the hypotenuse, b+c.
0 – The esoteric significance of it all.


About Edmark M. Law

My name Edmark M. Law. I work as a freelance writer, mainly writing about science and mathematics. I am an ardent hobbyist. I like to read, solve puzzles, play chess, make origami and play basketball. In addition, I dabble in magic, particularly card magic and other sleight-of-hand type magic. I live in Hong Kong. I blog at You can find me on Twitter @EdmarkLaw and Facebook. My email is
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4 Responses to The Ten Digits Of The 3-4-5 Pythagorean Triangle

  1. Jess Wen says:

    Haha I like 0 – ‘the esoteric significance of it all’

    Liked by 1 person

  2. Thanks for the memories…and the nightmares! 😖😄

    Liked by 1 person

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