MYP 3Year 9Term 2
9.4 Transformations, Congruence and Similarity
Translation · Reflection · Rotation · Enlargement · Congruent & similar triangles · Scale factors
Geometry
11 objectives
Learning objectives
What students should be able to do by the end of this unit.
Transformations
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- Perform translations, rotations and reflections of shapes.
- Perform enlargements from a given centre with a positive whole-number or fractional scale factor.
- Transform individual coordinates and rigid figures on the Cartesian plane.
- Describe transformations fully (type + parameters).
- Perform and describe compound transformations.
Congruence and Similarity
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- Understand definitions and notation for congruence (≡) and similarity (∼).
- Identify congruent figures using SSS, SAS, ASA and RHS.
- Identify similar figures using matching angle criteria.
- Find missing sides or angles in similar figures using the linear scale factor.
- Understand that area scales by the square of the scale factor (k²).
- Understand that volume scales by the cube of the scale factor (k³).
Review pack
Curated revision materials parents and students can download.
A review pack for this unit is being prepared.