Polygons with equal area and perimeter but different number of sides? Let's say we have two polygons with different numbers of sides. They can be any sort of shape, but they have to have the same area, and perimeter. 
There could be such possibilities, but can someone show me with pictures? I just need visualize it.
Sometimes in life you just have to know it, and sometimes we need a picture shown in our faces :).

┌─┐   ┌┐   
│ │   │└─┐
│ └─┐ │  └┐
└───┘ └───┘

Edit: I like the above figures because they're easy to generalize to many sides. But if it's unclear that they have the same area, here's another pair: the L and T tetrominoes. 


You can imagine sliding the square on the right side up and down relative to the 1x3 bar on the left side; this operation preserves both area and perimeter. Explicitly, both tetrominoes have area 4 and perimeter 10. The L has 6 sides, and the T has 8 sides.
