Free interactive math game: Perimeter of L-Shape — Count outer edges. Part of the Geometric Shapes category on MathKite.
Taken from the generator that powers this exercise. A fresh set appears every time the page is opened, and the printable worksheet holds ten of them.
The perimeter of an L-shaped figure.
Work out any unmarked sides from the marked ones, then add every edge right around the outline.
The two short vertical edges of an L together match the single long one opposite.
Skipping the unlabeled sides. Every edge counts, even the ones without a number on them.