Transformations.
Move and compare shapes using translations, mirror reflections and rotations. Record coordinates, follow ordered transformations and explain congruence.
Work through the topic
Learn the method, follow the examples, then try the worksheet.
- 01
Translations
Slide points and shapes by a stated horizontal and vertical movement, keeping their size and orientation.
- 02
Reflections in coordinate axes
Reflect points and shapes in the coordinate axes using equal perpendicular distances from the mirror line.
- 03
Rotations about a point
Turn a point or shape through a stated angle and direction about a stated centre.
- 04
Recording transformations with coordinates
Record and identify transformations by comparing matching coordinate pairs and checking every vertex.
- 05
Sequences of transformations
Follow transformations in the stated order, record intermediate images and explain why reversing the order can change the result.
- 06
Explaining what stays unchanged
Explain the lengths, angles and areas preserved by rigid transformations, and recognise a change that is not a translation, reflection or rotation.
Topic review
Revisit the key ideas, then choose a practice paper.