There is no mixed number for the three shapes.
2
2 rhombuses and 2 triangles
2 and 1 half
2 rhombuses
It is a hexagon.
There are 4 triangles in a 6 sided hexagon
It is: 2 and a 1/2 as a mixed number
trapezoids have 4 sides, rhombuses have 4 sides
if you are asking "what is 3 and 1/2 as a mixed number", the answer is that it already is in mixed number format.
7
Diagonals in an hexagon: 0.5*(6^2 -3*6) = 9 diagonals
it would be 2 1/2, which is 5/2 as a mixed number.