**1. What type of enlargement gives an image which is upside down?**

With a negative scale factor. (When the image and the object are on opposite sides of the centre of enlargement.)

**2. Is it possible to have an image that is smaller than the object under an enlargement?**

Yes, when the scale factor is less than 1

ANDgreater than -1. e.g 0.5 or -0.5

**3. How many points are invariant (do not move) under enlargement?**

There is only one invariant point under an enlargement.

That is the centre of enlargement.

**4. Is a enlargement an isometry?**

No. The size and shape of the image and the object

changeunder enlargements unless the scale factor is 1 or -1.

**5. How is the centre of enlargement found****?**

Join two or more object points to the corresponding image points.

Where these lines intersect is the centre of rotation.