Geometric measurement: recognize perimeter as an attribute of plane figures and distinguish between linear and area measures.
Measurement and Data
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Advanced students compare the perimeters and areas of rectangles.
Basic students solve for the perimeter of a polygon given all of the side lengths.
Proficient students solve for the perimeter of a rectangle given the length and width; find one unknown side length of a polygon when given the perimeter in mathematical or real-world contexts.