1. What is a Quadrilateral?
A polygon with 4 sides!

2. Properties of a Rectangle
4-sided
Each angle is a right angle
Opposite sides are parallel
Opposite sides are equal

3. Properties of a Parallelogram
4-sided
Opposite angles are equal
Opposite sides are parallel
Opposite sides are equal

4. What is the Area of a Shape?
The area of any shape is the number of unit squares inside that shape.
You can find area by using area formulae or by counting the square units within that shape.
Area
How much paint will cover the shape?

5. L.O. To be able to find the formula for the area of a parallelogram
Activity Time!
Ideally in Pairs
Pair of Scissors needed
SHEETS

6. Instructions
STEP 1: Fill in the white section of the table

7. Instructions
STEP 2: Draw a line from the bottom left corner of SHAPE A to the 3rd box of the length. CUT the triangle formed

8. Instructions
STEP 3: Place the removed triangle on the other end of the rectangle. Fill in the grey section on your table for shape A.

9. Instructions
STEP 4: Count 3 boxes from the bottom of shape E. Draw a line upwards to form a right angled triangle – CUT it.

10. Instructions
STEP 5: Place the removed triangle on the other end of the parallelogram. Fill in the grey section on your table for shape E.

11. Instructions
STEP 6: Once your table is complete, answer the questions underneath the table. Dimensions are sides (lengths, widths, heights)

12. Area of a Parallelogram
The Area of a Parallelogram is given by the formula:
BASE X PERPENDICULAR HEIGHT
Note:
Any side can be chosen as the base of the parallelogram but the height must be perpendicular to the base.
IMP: The slanting lengths are irrelevant for finding the area, they are only used to calculate the perimeter.

13. Area of Parallelogram = Base x Perpendicular Height
Area of Parallelogram = 5 x 6 = 30cm2