Triangular tiling

Triangular tiling is when you create shapes using triangles. You can make a repeating pattern by putting triangles together in different ways. People have done this for thousands of years to create things like patterns on floor tiles, mosaics, and quilts. It's like putting pieces of a jigsaw puzzle together, but instead of squares you use triangles.
Think of it like making a road in a video game. You use triangles to make the paths and the roads look smooth and curved. Except in this case, we're trying to make patterns or pictures with the triangles instead of roads.