A square is very much a rectangle – the definition of a rectangle is simply “all angles are right angles” which is certainly satisfied by a square. We should subtract only if specifically asked to do so. In a similar manner, a rectangle is a parallellogram (and so is a rhombus)

We should subtract number of squares from 1296 or we are taking advantage of the fact that square is a special type of rectangle?

A square is very much a rectangle – the definition of a rectangle is simply “all angles are right angles” which is certainly satisfied by a square. We should subtract only if specifically asked to do so. In a similar manner, a rectangle is a parallellogram (and so is a rhombus)

regards

J