Can someone explain to me how the is*equal*approx method works? I've read the documents, but I couldn't quite understand how it works, especially regarding the function parameters.

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It turns out that most fractional decimals cannot be represented precisely in binary and so there are a lot of fractional decimals that are approximated when stored in the computer causing what is known as floating point imprecision

How then do you decide that two floating points shall be considered equal?

That's called an epsilon (Greek Letter) which is used by `Is_equal_approx`

and the function name is self explanatory hence the vague documentation.

```
Is_equal_approx(1.333333333, 1.4) # yes it is
```

Same should apply for Rects, Basis, Vectors, Transforms

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