What are equilateral triangles?

An equilateral triangle is a special kind of triangle where all three sides are exactly the same length.

Imagine you have three identical straws, each one is the same size and shape. If you connect them together at their ends, you'll make a perfect equilateral triangle. It looks like a pyramid with a flat top, but it's just made of straight lines!

• All three sides are equal, like having three friends who are all the same height.
• All three angles inside the triangle are also equal, each one is 60 degrees, which is like taking a slice of a round pizza that’s been cut into six pieces.

If you draw an equilateral triangle on paper and then fold it in half, both sides match perfectly. That's because everything about it is symmetrical, just like how your two hands look the same even though they're separate!