ELI5: Explain Like I'm 5

Hyperbolic triangle

A hyperbolic triangle is a shape that looks like a regular triangle, but it is drawn in a special way that makes it look funny. It is like when you draw a picture of a person and you exaggerate their features to make them look silly.

To make a hyperbolic triangle, you draw three lines that make a triangle shape. But, instead of drawing the lines straight like normal, you bend them in a special way. Imagine if you were to draw a line, but then you pulled the ends of the line away from each other. This would make the line look curved or bent.

In a hyperbolic triangle, the lines are bent in this way so that they look like they are going further and further away from each other as they go on. This makes the triangle look stretched out and funny.

But here is the tricky part – even though the triangle looks stretched out, it is actually still the same size as a regular triangle. You could measure the sides and angles with a ruler and see that they have the same size and angles as a regular triangle.

Hyperbolic triangles are important in math because they help us understand a special kind of math called hyperbolic geometry. This is a type of math that deals with shapes that are drawn in a special way to look funny like a hyperbolic triangle. It is like a fun and silly version of regular geometry!