for the first one:
the round cylinders are lower than the pyramid in the middle, push the object through starting with the cylinders, so the object is going through the hole diagonally on its side. So all you see is the pointed tip of the pyramid and the flat base.
for the second one:
turn the object so that it is laying on its flat side (non-slanted side)...as in a 90 degree rotation to the right, and push it through. the parallelograms trick your eyes into seeing the slanted lines, but pushing it through on its flat side gives a square shape.