Find the area and perimeter of labeled shapes, from rectangles and triangles to circles, regular polygons, and composite shapes. Slanted sides stay labeled, so students practice picking the true height.
Triangles include right, acute, and obtuse. Obtuse triangles, with the height drawn outside the shape, appear with larger numbers or decimals. Regular polygons are pentagons, hexagons, and octagons with the apothem given.
L and U shapes hide some side lengths, so students find the missing sides first. Shaded regions ask for area only.