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Overview
Grade 7 Math
Shape and Space
12. Develop and apply a formula for determining the area of triangles, parallelograms, circles
12.3 Rectangles
Properties of a Rectangle
Discover the definition and key properties of a rectangle, from right angles and equal diagonals to area and perimeter formulas.
What You'll Learn
Identify a rectangle as a parallelogram with four right angles and two pairs of equal, parallel sides.
Apply the property that a rectangle's diagonals are equal in length and bisect each other.
Calculate the area of a rectangle using length times width and the perimeter using twice the sum of the sides.
Use the Pythagorean theorem to find the length of a rectangle's diagonal from its side lengths.
Compare a rectangle to a square and a rhombus to see which properties they share and which they do not.
This Unit Includes
Learning resources
PEI Curriculum Aligned