January 8, 2013
Make a quadrilateral and a triangle.
Count the dots around - perimeter.
Count the dots in inside - area approximation.
This polygon can have a large area. But in another shape it would
have a small area.
Convex polygon
Each of these is concave.
We made a rubbing with the side of a crayon on paper over a plate to
make our dot grid.
Quadrilaterals were actually easier to make out of beams
because there would be tow segments down and two in the second layer.
To make a triangle it was necessary to make one segment with two beams
held together with two pin connectors.
