“No disrespect to Pythagoras or Toblerone, but I’m not enamoured by triangles – or at least the ones that show up in garden form. They naturally drag the eye to the narrow end of the plot where everything seems to get small and tight. It can feel as though you are Alice in Wonderland swigging from that pesky ‘Drink Me’ bottle. But it is possible to deal with triangles – and indeed most awkward shapes – with the triple-d tactics of denial, disguise and distraction. You can pretend the triangle never existed by designing using any shape but this one, then disguise the tell tale signs at the boundary and finally distract the eye along the way as much as possible. Before you know it the question will be, ‘Triangle? What triangle?'”