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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
12.5 Trapezoids, rhombi, and kites
Properties of Trapezoids, Rhombi, and Kites
Master the side, angle, and diagonal properties of trapezoids, rhombi, and kites with clear rules and step-by-step examples.
What You'll Learn
Identify a trapezoid by exactly one pair of parallel sides called bases.
Apply the midsegment formula to find the length of a trapezoid's midsegment from its two bases.
Recognize that a rhombus has four equal sides with diagonals that bisect each other at right angles.
Use the rule that consecutive angles between a rhombus's parallel sides are supplementary.
Distinguish a kite from a rhombus by comparing two pairs of adjacent equal sides versus four equal sides.
Calculate unknown angles in a kite using the property that one pair of opposite angles is congruent.
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Learning resources
PEI Curriculum Aligned