Consider the following figure.
A two-dimensional L-shaped figure is displayed. The topmost horizontal line is labeled 4m. On the right portion, the upper vertical side is labeled $x$x. The bottom horizontal line is labeled 12m. The leftmost vertical line is labeled 9m. The horizontal side y is between the ends of side $x$x and the bottom vertical side, on the rightmost, labeled 2m.
Find the length $x$x.
Find the length $y$y.
Calculate the perimeter of the figure.
Find the perimeter of the shape.
Estimate and measure the perimeter and area of regular and irregular polygons, using a variety of tools (e.g., grid paper, geoboard, dynamic geometry software) and strategies