What two things do you need to describe an enlargement?
How big it has moved and where the centre or enlargement.
What is the centre of enlargement
The centre of enlargement is where if you put two lines going out and it should reach the tips of the bottom and top of both triangles.
what is a scale factor?
A scale factor is a number that tells you how much you have to enlarge the shape.
What happens to the angle sizes in the corner of the shape when you enlarge it?
Nothing happens to the angles when you enlarge the shape because they are always the same.