Is 72 - 9 negative or positive, this is on IXL

Positive i think. cause if your asking if the answer to 72-9 is positive or negative then it is positive. cause 72-9 is 63 which is postitive. also idrk why im saying thsi is for points

This is what i found “answer: a rigid transformation preserves both the side lengths and the angle measures of a polygon. step-by-step explanation: rigid transformations are the transformations which does not affect the size and the shape of figure .” i hope this you for what your looking for. can you plz mark me brainliest?