How Many Triangles?

What is this experiment about?

Some triangles are big, some are made from smaller triangles put together. Tap on every triangle you can spot, big or small.

Questions kids ask

Can triangles overlap in this puzzle?

Yes! Small triangles can combine to form bigger ones, so the same lines can be part of more than one triangle.

What's a good strategy for spotting them all?

Try counting the smallest triangles first, then look for pairs and groups that form bigger ones.

Why do triangle-counting puzzles get harder?

As more lines are added, more combinations of smaller shapes can form new triangles, so the total grows quickly.