1. Parallelogram – Area – Demonstration
This resource provides animated demonstrations of the mathematical method.
Check animations and delete slides not needed for your class.

2. What do we call the new shape?
What is the area
of this
blue & yellow
rectangle?
3 cm
10 cm
We can rearrange the pieces
What is the area
of this
blue & yellow
shape?
What do we call the new shape?
How can we calculate the area of these types of shapes?

3. Area of a Parallelogram =
Area of a Rectangle =
base × height
Area = 40 cm2
4 cm
10 cm
We can cut off one corner of the rectangle and move it to make a parallelogram.
The area stays the same.
Area of a Parallelogram =
base × height
Area = 40 cm2

4. 10 cm 5 cm 6 cm 14 cm 4 cm 9 cm 7 cm Area of a Parallelogram =
base × height
5 cm
6 cm
14 cm
Area = 50 cm2
Calculate the areas
of these parallelograms.
Which measurements
do we need to use?
4 cm
Area = 28 cm2
9 cm
7 cm

5. B A C D F E 5 cm 12 cm 11 cm 5 cm 8 cm 4 cm 3 cm 12 cm 21 cm2 35 cm2
Area of a Parallelogram =
base × height
Calculate the area of each shape &
match with an answer B A
5 cm
12 cm
11 cm
5 cm
8 cm
4 cm
3 cm
12 cm
21 cm2
35 cm2
40 cm2
7 cm
7 cm C
10 cm
44 cm2
120 cm2
81 cm2 D
These shapes are congruent. F
7 cm
10 cm
5 cm
3 cm E
5 cm
9 cm

6. B A C D F E 40 cm2 5 cm 12 cm 11 cm 5 cm 44 cm2 8 cm 4 cm 3 cm 12 cm
Area of a Parallelogram =
base × height
Calculate the area of each shape &
match with an answer B
40 cm2 A
5 cm
12 cm
11 cm
5 cm
44 cm2
8 cm
4 cm
3 cm
12 cm
7 cm
7 cm C
10 cm
21 cm2 D
120 cm2
These shapes are congruent. F
81 cm2
7 cm
35 cm2
10 cm
5 cm
3 cm E
5 cm
9 cm

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