I started out with the cube numbers (equation c)because a rectangle multiplied by a rectangle would mean that it would be the rectangle cubed , so I worked out that the only cubes would be 4 and 9 . Equation c had to be 3 cubes because the product was a shape that wasn't shown anywhere else meaning that it wouldn't go into any other numbers because 9 x 2 is 18 so the the product in equation c was the number 9 and the rectangle was 3 that meant equation D was 2 cubed so that would mean that the oval was four . Then we use the numbered shapes to work out the others so equation A was 3 x 4 because that was what we worked out which meant the circle was 12 and with that we could work out equation E because 12 divided by 2 is six so the equalateral triangle was 6 , we could also work out equation B because 2 x 4 is 8 which meant the semi circle was eight . Because the semi circle was 8 you could work out equation F because 0 x a number is always 0 so it was 0 x 8 = 0 so the isosceles triangle was 0 . With the leftover numbers we could work out equation G which was 2 x 5 is ten because the other numbers were taken or too large which left equation H that was 1 x 10 because we knew 10 and anything multiplied by 1 was the original number. This means that
0 = isosceles triangle
1 = rhombus
2 = square
3 = rectangle
4 = oval
5 = five point star
6 = equalateril triangle
7 wasn't represented by a shape
8 = semi circle
9 = 8 point star
10 = hectagon
11 was not represented
12 = circle