AC9M7SP03Year 7SpacePractised on site

AC9M7SP03 — Year 7 Space

Official Curriculum Content Description:

describe transformations of a set of points using coordinates in the Cartesian plane, translations and reflections on an axis, and rotations about a given point

Worked Examples (1)

Example 1Describing Geometric Transformations
Shape A(2,3),(4,3),(2,6)A(2, 3), (4, 3), (2, 6) is mapped onto A′(3,3),(5,3),(3,6)A'(3, 3), (5, 3), (3, 6) by a translation. Fully describe the transformation (e.g. give the vector for a translation, the mirror line for a reflection, the centre and angle for a rotation, or the centre and scale factor for an enlargement).
Common mistake: Reversing the direction of the translation, which negates both components of the column vector.
Correct Answer:Translation by column vector (1, 0)
Worked Solution:
1. Each vertex moves by the same vector. From A(2,3)A(2, 3) to A′(3,3)A'(3, 3): change of 1 in xx and 0 in yy, so the translation is by column vector (1, 0).

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