ELI5: Explain Like I'm 5

Triangulated irregular network

Okay kiddo, so imagine you have a big piece of paper and you want to draw a really detailed picture. But you're not just going to draw it all at once, you're going to draw it in small sections, like puzzle pieces.

A triangulated irregular network (TIN for short) is kind of like a bunch of puzzle pieces put together to make a picture. But instead of puzzle pieces, we use triangles to fill in the space.

First, we take a bunch of points on our paper, like where the corners of the puzzle pieces would go. Then, we draw triangles between those points. These triangles can be different sizes and shapes depending on what we need for the picture.

But we don't want just any triangles, we want triangles that fit our paper perfectly and don't leave any spaces unfilled. So we have to be very careful when we draw them.

Now, when we have all the triangles filled in and they all fit together just right, we have our TIN! And we can use it to help us with things like measuring the height of mountains or the depth of a lake.

Just like a puzzle is made up of many small pieces that fit together, a TIN is made up of many small triangles that fit together to make a big picture. And that's a triangulated irregular network!