A Rational Number can be written as a ratio of two integers. For example, as a simple fraction. That leaves us for the answer to the second one as irrational. To terminate means to end, so a terminating decimal is a decimal that does not go on forever. Whereas, a repeating decimal continues repeating forever (or indefinitely).
I would like to apologize in advance if any of these were incorrect.
I have not done this mathematically but I think it would be a parallelogram. I just visualised the points and it looks like a parallelogram on a slant. Let me know if you need a more mathematical answer :)
