The smaller quadrilateral has been reflected, then enlarged and finally rotated.

Dave wants to transform a shape but wishes it to remain similar to the original shape. Which of these transformations is he able to perform, while maintaining similarity?

Write the following using mathematical symbols:

$\triangle ABC$△ABC is similar to $\triangle DEF$△DEF.

Outcomes

GM6-5

Recognise when shapes are similar and use proportional reasoning to find an unknown length