Scale Factor Exercise

Introduction

Use the applets below to explore scale factors and answer the questions below.

Applet for Enlargement

Draw Your Solutions

In the applet above, draw the following: 1) an enlargement of A with scale factor 2 2) a shape with the same size as A, but rotated

Applet for Enlargement with a Centre

Questions for Enlargement with a Centre

In the above applet, Scale is the scale factor and D is the centre of enlargement for triangle ABC. You can move any of the points.

Question 1

Describe the enlargement with a scale factor larger than 1.

Question 2

Describe enlargements for 0 < Scale < 1

Question 3

How else could you describe an enlargement with scale factor = -1?

Question 4

How does enlargement by a negative scale factor compare with enlargement by the positive version of that scale factor (e.g. -2 and 2)?