Final answer:
The ratio of triangles to total shapes is 3:8.
Step-by-step explanation:
To find the ratio of triangles to total shapes, we need to divide the number of triangles by the total number of shapes. In this case, there are 6 triangles and 16 shapes in total. So the ratio of triangles to total shapes is 6:16. This ratio can be simplified by dividing both numbers by their greatest common factor, which in this case is 2. Dividing 6 by 2 gives us 3 and dividing 16 by 2 gives us 8. So the simplified ratio is 3:8.