The impossible triangle

Maria Jukić & Renata Krešomentor: prof. Marina Ninković

XV. gimnazija, Zagreb

Penrose triangle

never ending trianglecreated by Oscar Reutersvärdpopularised by Roger Penroseoften called impossibility in its purest

formnot that hard to draw...

Step 1

first draw an equilateral triangle

Step 2

draw three lines parallel with the sides of the triangle

lines should be inside the triangleeach line should be equally

distanced from the sides of the triangle

Step 3

draw another three lines by repeating step 2

this time keep the lines inside the smaller triangle you drew

Step 4

outline the biggest triangleconnect the intersections of the lines

from step 2 and the biggest triangle

Step 5

now need you do some more outlining which is difficult to explain so just follow our image

Step 6

you’re almost doneerase the leftover lines

Step 7

for a better effect we suggest adding some shadowsshadows

Other Penrose polygons

Penrose square Penrose pentagon

Penrose hexagon Penrose octagon

Real life

a big size model of the impossible triangle is found in Perth, Australia

Thank you for your attention!