What 2 things do you always need to say to describe an enlargement?
How many times bigger you have to make the shape.
Where is the centre of enlargement.
What does centre of enlargement mean?
Where the two lines met on the grid.
What is a scale factor?
How many times the shape enlarges.
Explain how to work out the scale factor on a grid, and with no grid. Use diagrams you have screenshot from the myimaths lesson.
Use a ruler on the same line like this
What happens to the angle sizes in the corner of the shape when you enlarge it?
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