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Week 6: Shapes around us

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This is a square which has sides of length 4 cm. It is divided into 16 smaller squares with each of side measuring 1 cm. Black construction lines are drawn on the figure as follows. A diagonal line is drawn from the top right-hand corner to the bottom left-hand corner to divide the square into two triangles. The left-hand triangle is divided into two identical triangles by drawing in the diagonal line from the top left-hand corner. The area of each of these triangles is shown as 4 cm2. The right-hand triangle is divided into five pieces. In the bottom right there is a right angled triangle, the base and height formed by the edges of two small squares. This has an area of 2 cm2. Above this a parallelogram, with a base formed by the edges of two small squares and an area of 2 cm2. To the left of this is a small triangle, of area 1 cm2, with two sides formed by the diagonals of the small squares. Below this, and slightly to the left, there is a square which is orientated to stand vertically on a corner. This has an area of 2 cm2. The final shape is another small triangle in the bottom left corner of the large square, with two sides formed by the diagonals of the small squares. The of area of this is 1 cm2.

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