Final answer:
The simplest ratio of triangles to circles is 3:1.
Step-by-step explanation:
To find the simplest ratio of triangles to circles, we need to determine the common factor between the two numbers. In this case, 2 is a common factor of both 6 and 2. By dividing both numbers by 2, we get a ratio of 3:1. So, the simplest ratio of triangles to circles is 3:1.