You should be familiar with the common 2-D shapes, but to recap, we give the names and definitions below.

What could each one of the following shapes be if it has 4 sides and:

(a) | opposite sides equal and parallel, |
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It could be a parallelogram, rhombus, rectangle or square. | |

(b) | all sides equal, |

It could be a rhombus or square. | |

(c) | two adjacent angles are right angles? |

It could be a trapezium, rectangle or square. |

For the grid opposite, name all shapes that are:

(a)

*congruent*,

(b)

*similar* to shape A.

Using 20 m of fencing, design *four* different rectangular enclosures. For each one, find its area. Which shape gives the maximum area?

Possible shapes could be:

area = 2 × 8 = 16m² | |

area = 3 × 7 = 21m² | |

area = 4 × 6 = 24m² | |

area = 5 × 5 = 25m² |