please show step by step.
This is so much easier than it looks.
We are talking quanities here.
eqilateral triangles to isosceles triangles is 2:3
2 equilateral triangles and 3 isoceles triangles
2 + 3 = 5
isosceles triangle to scalene triangles is 6:5
6 + 5 = 11
triangles to rectangles is 5/4
5 + 4 = 9
rhombuses to trapezoids is 3:5
3 + 5 = 8
quadrilaterals to triangles is 4/3
4 + 3 = 7