Print and cut-out these shapes:

Print and cut-out these quadrilaterals:

a. Sorting out your shapes

b. Sorting your quadrilaterals (4 sides and 4 corners)

Your sorting should look something like this:

c. Sorting out your triangles (3 sides and 3 corners):

Sort out the triangles from the other shapes. What is different about them from the other shapes?

Triangles are very rigid and strong. Have a look at the buildings around you and see how many triangles you can see in the construction.

d. Sorting your parallelograms

To help you: What do we mean by parallel sides? Answer: Parallel sides or parallel lines are sides or lines which never meet each other.

e. Sorting trapeziums

Questions and answers

f. Further sorting of quadrilaterals

You need: A variety of shapes.

Draw the diagram below on a large piece of paper. Make your diagram big enough for your shapes to fit in it:

g. Properties of shapes

Copy the following table and complete it by ticking the special properties after examining each of the shapes:

Properties of shapes | ||||||
---|---|---|---|---|---|---|

Two pairs of adjacent sides equal | Opposite sides equal | Opposite angles equal | Two pairs of opposite sides equal | All angles equal | All sides equal | |

Square | ||||||

Rectangle | ||||||

Parallelogram | ||||||

Rhombus | ||||||

Kite | ||||||

Trapezium |

h. Squares

A square is a quadrilateral, parallelogram, rectangle and a rhombus

You will see that squares are used in later units for Polyominoes (tessellating squares) and Tangrams (puzzles using squares) and Geoboards (shapes based on a square).