Lengths and angles

This task is about what happens to lengths and angles under enlargement.

In this diagram shape X has been enlarged by a scale factor of 3 to create shape Y.
Use the diagram to answer the following questions.

Question

a)  The lengths of each side of shape Y are all ...

    • smaller than the sides in shape X.

    • the same as the sides in shape X.

    • 3 times as long as the sides in shape X.

    • 6 times as long as the sides in shape X.

    • 9 times as long as the sides in shape X.

Question

b)  The angles in shape Y are ...

    • all smaller than the angles in shape X.

    • all the same as the angles in shape X.

    • all bigger than the angles in shape X.

    • sometimes smaller and sometimes the same as the angles in shape X.

    • sometimes bigger and sometimes the same as the angles in shape X.