Home » Worksheets » Geometry » Understanding Properties of Quadrilaterals 3rd Grade Math Worksheets

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Definition:

The term quadrilateral can be simply defined as a two-dimensional closed figure with four sides. Basically, there are two-dimensional shapes classified under quadrilaterals such as square which has a certain property.

Summary:

In geometry, a quadrilateral is defined as a closed, two-dimensional shape which has four straight sides.

• A quadrilateral has 4 sides, 4 angles, and 4 vertices
• A quadrilateral can be regular or irregular
• The sum of all the interior angles of a quadrilateral is 360°

• PARALLELOGRAM – Opposite sides are parallel and equal. Opposite supplementary angles are equal.
• SQUARE – All sides are equal. All right angles are equal and measure 90°.
• RECTANGLE – Opposite sides are parallel and equal. Opposite right angles are equal and measure 90°.
• RHOMBUS – All sides are equal. Opposite angles are equal.
• TRAPEZOID – Only one pair of opposite sides are parallel. Adjacent angles add up to 180°.