Question

Describe fully the single transformation which takes shape A to shape B.

51
4
3
A
2
B
1
X
-5 -4 -3 -2 -1 0
-1
1
2
3
4
5
-2
-3
-4
-5
be

Answer 1

Rotation, 180 degrees

Explanation:

You will need to use the tools in maths watch to find the centre of rotation (the point where the shape has been rotated).

Answer 2

Rotation 180° clockwise about point (0, 2)

Explanation:

From inspection of the graph, the initial interpretation is that B is a reflection of A in the y-axis and then shifted one unit down.

However, we are told this is a single transformation, so it cannot be a reflection. If it not a reflection, it must be a rotation.

From inspection we can see that it has been rotated 180° clockwise about a point.

To determine the point, draw a line between corresponding points on the shapes. The point of intersection of these lines is the point of rotation.