Reading & language
A geometry formulas reference sheet lists eight shapes — rectangle, square, parallelogram, kite, rhombus, circle, triangle, and trapezoid — each with a labeled drawing, its area formula, and its perimeter formula (or circumference, for the circle). Alongside each formula, short usage notes flag common student errors: using perpendicular height rather than slant height for parallelograms, rhombi, triangles, and trapezoids, and correctly identifying the hypotenuse on a right triangle. The sheet is designed as a compact, single-page reference rather than a set of practice problems.
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