Visual Pattern Challenge 17 - extra difficult!
Can you predict how many triangles will be in the next step of this visual pattern? How about in step number 43? Can you create an equation that could be used to predict the number of triangles in any step? Give it a try and let me know how you do.
The pattern is from visualpatterns.org by Fawn Nguyen and is licensed under a Creative Commons Attribution 4.0 International License.