don steward
mathematics teaching 10 ~ 16

Tuesday, 2 January 2018

biggest square inside a right angled triangle

a good, if demanding, application of similar triangles

 general cases
proving a general result

what are the steps?

unsurprisingly, I subsequently found that this has been explored by (amongst others) Marion Walter in FLM 21 in 2001 and MT 53 in 1970

her general results agree with those above (it looks like there is a small numerical error on p.29 of her article)

she points out that 1/y^2 = 1/x^2 + 1/c^2 where 'c' is the hypotenuse

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