A Problem to start Adult Ed Family Literacy (& Numeracy) Week off!

Be sure to share not just your answer - but if you used a strategy.  Happy AEFL(&N) Week!

Picture of triangles asking how many


I used Google Drawing. I clipped a copy of the original image on my PC using Shift-Windows button-S and pasted it into Google Drawing multiple times.

I like Mark's method as well. Markup on a phone?

I started with all the single triangles. Then I started looking for all the triangles I could make by combining two triangles, then combining three triangles, then four triangles, and finally six triangles. 35 triangles in the original image