The nine rectangles A, B, C, D, E, F, G, H and I overlap one another. Rectangle A intersects rectangles D and F; this ...

In mid-March, the mathematicians Joshua Greene and Andrew Lobb found themselves in the same situation: locked down and struggling to adjust while the COVID-19 pandemic grew outside their doors. They ...

An important lesson in every geometry class is learning the differences between rectangles and squares. So, as we start a brand new school year, let’s keep this challenge incredibly simple: In the ...

Label the rectangles correctly with the letters A to I. Show puzzle solution Only the four yellow rectangles intersect three other rectangles, and therefore they must be F, G, H and I. H doesn’t ...