A peculiar property pertaining to Pythagorean products

Matt Peperell

matt@peperell.com

https://mathstodon.xyz/@mattp

https://mattp.co/mj2024

A choice...

Crunch through some algebra?

Show some graphs?

Generating Pythagorean triangles

m > n > 0  { m,n  ℕ }

a = 2mn

b = m2 - n2

c = m2 + n2

Known to Euclid

Generating Pythagorean triangles

Let's attempt to graph the values

Let's see that table again (with an extra column)

Highlighting the property

60

∣ abc

Two questions...

How might Euclid have proven this?

Can you prove the assertion that 60 ∣ abc

60 = 2 × 2 × 3 × 5

Spoiler...

Two questions...

How might Euclid have proven this?

Can you prove the assertion that 60 ∣ abc

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By Matt Peperell

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