Dear Me, I Am Going to Pieces!
ckcowl - It has to do with the way your are measuring the hexagons. I am sure yours are the right size but I bet you are measuring from flat edge to flat edge. The size of a shape is determined by the length of its edge, shown as distance "S" in the diagram I have uploaded. This makes matching of shapes very easy. A 1" hexagon goes with a 1" diamond, which goes with a 1" triangle, etc. A 3" hexagon would measure about 5-1/4" from flat edge to flat edge.
Originally Posted by ckcowl