Karen Morrison and Nick Hamshaw Solutions for Exercise 4: Exercise 23.4

Copy the axis and shapes onto squared paper. Using the origin as the centre of enlargement, and a scale factor of three, draw the image of the following shape under enlargement.

Copy the axis and shapes onto squared paper. Using the origin as the centre of enlargement, and a scale factor of three, draw the image of the following shape under enlargement.

Copy the axis and shapes onto squared paper. Draw the image of triangle $ABC$ under an enlargement of scale factor $2$ and centre of enlargement $P(2,1)$.

Triangle $G\text{'}H\text{'}I\text{'}$ is the image of triangle $GHI$ under an enlargement. Find the scale factor of the enlargement and the co-ordinates of the centre of the enlargement.

In the diagram, square $P\text{'}Q\text{'}R\text{'}S\text{'}$is the image of square $PQRS$ under an enlargement. Find the scale factor of the enlargement and the co-ordinates of the centre of enlargement.

Draw the enlargement of object $ABCD$ with a scale factor $\frac{1}{4}$ and centre of enlargement at $(0,0)$.

Maria has a rectangular painting which is $240 \mathrm{mm}$ by $180 \mathrm{mm}$. She wants to make a reduced coloured copy of the painting to put into a small silver frame. The display area on the frame is $18 \mathrm{cm}$ by $13.5 \mathrm{cm}$. 

What scale factor should she use to make the photocopy?

Maria has a rectangular painting which is $240 \mathrm{mm}$ by $180 \mathrm{mm}$. She wants to make a reduced coloured copy of the painting to put into a small silver frame. The display area on the frame is $18 \mathrm{cm}$ by $13.5 \mathrm{cm}$.