4. Shade:
of the circles in box (a) of the triangles in box (b)
of the squares in box (c).
1) In figure a there are 12 circles: half of 12 = 6
2) In figure b there are 9 triangles: 2/3 of 9 = 6
3) In figure c there are 15 triangles: 3/5 of 15 = 9