Enlargements and Area

Maths

Transforming 2-D figures

Select all the words that would correctly fill the gap: When we _______ a shape we can affect the area.

Select the option that best fills the gap in order:  The example below shows two different enlargements of the triangle on the left. If we enlarge by a ___________ of 2, the area becomes ____ times greater.

I enlarge this small rectangle with scale factor 3. How many of the small rectangles would be needed to make the enlarged rectangle?

This shape is enlarged. What is the area of the enlarged shape if the scale factor is 5?

This shape is enlarged. What is the area of the enlarged shape is the scale factor is 1?

This shape is enlarged. What is the area of the enlarged shape is the scale factor is 4?

Fill in the gap: We can enlarge shapes using a ___________.

The 'form' of the shape (if it was a square it night not be a square anymore)

When you enlarge a shape by a scale factor which of the following will change?

Decide if the following is true or false: An enlarged shape will always be bigger.

State the scale factor of enlargement for the transformation from A to B

State the scale factor of enlargement for the transformation from B to A

The perimeter of B is 1/4 times bigger than the perimeter of A.

The perimeter of B is 1/8 times bigger than the perimeter of A.

The perimeter of B is 4 times bigger than the perimeter of A.

The perimeter of B is 8 times bigger than the perimeter of A.

A is transformed to B. Which statement is correct?

A shape has a perimeter of 14 cm. What will the perimeter be after an enlargement by scale factor 5?

A shape has a perimeter of 14 cm. What will the perimeter be after an enlargement by scale factor 0.5?

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Enlargements and Area

Lesson outcome