QUADRILATERALS.  A plane shape with four straight sides is called a quadrilateral.  We name quadrilaterals by looking at the properties of their sides.

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Presentation transcript:

QUADRILATERALS

 A plane shape with four straight sides is called a quadrilateral.  We name quadrilaterals by looking at the properties of their sides and angles.

Can you name these Quadrilaterals according to their properties?

Describe the properties of a kite?

Kite

Describe the properties of a Trapezium?

Trapezium

Describe the properties of a Parallelogram?

Describe the properties of a Rectangle?

Describe the properties of a Rhombus?

Describe the properties of a Square?

Describe the properties of a Irregular Quadrilateral?

 Can a Quadrilateral have more than one correct name?  Can you think of one?

 A Square may also be called a rectangle, because it has all the angle and side properties of a rectangle (two pairs of parallel sides and 90 degree angles). It could also be called a Rhombus, because if its pairs of opposite sides are equal and its opposite angles are equal.

Have ago at classifying these Quadrilaterals… 