A quadrilateral is a 4-sided shape. We name quadrilaterals by looking at the properties of their angles and sides. These are examples of quadritalerals with the properties that give them their names.
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Parallelogram
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Rectangle
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Square
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Opposite angles are equal.
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Opposite sides are equal and parallel.
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- All angles 90º
- Opposite sides are equal and parallel.
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- All angles 90º
- All sides equal.
- Opposite sides parallel.
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Kite
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Rhombus
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Trapezium
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- Two pairs of adjacent equal sides.
- One pair of opposite angle are equal.
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- Opposite angles equal.
- Four equal sides.
- Opposite sides parallel.
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- One pair of opposite sides parallel.
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| What name best describes this shape? |
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There are two opposite sides that are both perpendicular to a third side. So, the two opposite sides are parallel to each other. This shape is best described as a trapezoid.
| What name best describes this shape? |
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Sides with matching hatch marks are congruent. This shape is best described as a kite.
| What name best describes this shape? |
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Sides with matching arrows are parallel. This shape is best described as a parallelogram.
