Question 6
A $5\times5$ square grid with a unit-square hole at the center can be cut along grid lines into 4 congruent pieces (the same shape and size). The central hole allows each piece to have area 6 square units.
The following is one way to do this. Sketch ALL other possible ways, excluding the example. Two ways are equivalent if one can be obtained from the other by a rotation or reflection.
The following is one way to do this. Sketch ALL other possible ways, excluding the example. Two ways are equivalent if one can be obtained from the other by a rotation or reflection.