This video tutorial [8:24] defines what a quadrilateral is and identifies and defines concave quadrilaterals, convex quadrilaterals, trapezoids, parallelgrams, rectangles, rhombi, and squares.

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CCSS: Adaptable

Concepts

rhombus, quadrilaterals

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Additional Tags

concave quadrilateral, convex quadrilateral, khan academy, khan academy math, parallelogram, quadrilateral, rectangle, square, trapezoid

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Classroom Considerations

Knovation Readability Score: 3 (1 low difficulty, 5 high difficulty)

Common Core

View 25,945 other resources for 9th - 10th Grade General Math