Page 387 - Math Smart - 7
P. 387
^ This diagram shows triangles A, B, C, D and E, and points P, Q, R, S and T.
When describing a
rotation, you need
to give the following
information:
• degree of rotation
• direction of rotation
• centre of rotation
Describe the following rotations.
a) Rotate from triangle A to triangle B.
b) Rotate from triangle A to triangle E.
c) Rotate from triangle B to triangle C
d) Rotate from triangle C to triangle D.
O Plot polygon PQRS on a coordinate grid where the coordinates of the points are P {-3, 3), Q (-1, 3),
R{-2, 1)andS(-4, 1).
a) Draw the graph of V = .v-
b) Draw the image of polygon PQRS when it is reflected about the line >' = x
i) Label the image.
ii) Write the coordinates of the image.
Mathematics Connect
The Singapore Flyer is one of the world's largest observation
wheels. The wheel rotates around the centre point. As the
wheel turns, it transforms the position of the people in the
carriages so that they are able to view Singapore
from different angles. Have you sat in a similar
observation wheel before?
Ij/ 0'/ /
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