Haskell translation

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added to C#

rewrote Point to be a modern JS class with x and y being getters to access private properties #x and #y. I added getters named X and Y for backwards-compatibility.

assertions should use assert.approx_equals()

added your random tests + extracted all assertions to a wrapper that takes care of approximate equality + displaying the input

Approved

python new test framework is required. updated in this fork

do you have to use trig to solve this?

Because we are dealing with integers, C# division or modulus by zero already throws a DivideByZeroException. There's no need to explicitly build and throw one. If we were using floats or doubles, we would get one of the infinities (or in the case of 0.0 / 0.0 or 0.0 % 0.0, NaN) as a result and would need to do further work to handle that.

Elixir translation ready for review and approval.

It wasn't difficult. Trouble with the input data, but otherwise, it's simple.

Misleading example. Example is array of arrays, but the tests are done with array of objects.

Yes, it is explained at the bottom, but still unnecessarily misleading. I think it would better if these were consistent - i.e. the example should show objects, or the tests should test an array of arrays as the argument.

Edit: I should add my comment is for the Javascript variation.