Can you count all the triangles in these images? (Hint: there are more than you think).

How many triangles are actually represented here? (Gordon Burgin /)

We know you are bored at home right now, too.

here These are puzzles and puzzles to challenge your family and friends, in person or by video chat.

Whether it's a simple square or an unstable equilateral, each polygon contains multitudes. These forms are no different; each has dozens of smaller geometric units nested within it. Can you count them all?

For a high resolution printable version: Click here

To see the answers: Click here

This article was originally published in summer 2019 Make it last matter of

Popular science.

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