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FORM I FORM II FORM III FORM IV QUIZ

28.0.0 REFLECTION AND CONGRUENCE (12 Lessons)

28.1.0 Specific Objectives

28.2.1 lines and planes of symmetry

28.2.2 mirror lines and construction of objects and images.

28.2.3 reflection as a transformation

28.2.4 reflection in the Cartesian plane.

28.2.5 direct and opposite congruency.

28.2.6 Congruency tests (SSS, SAS, AAS, ASA and RHS)

Notes

• Practical aspects should be used as much as possible

• ASS does not prove triangles congruent except when the triangles are right angled

• Images are oppositely congruent to their objects under reflection

Suggested Resources

  Mirrors, Cartesian plane, various symmetrical objects, tracing and graph papers, real life

experiences

• Suggested Further Assessment

- Practical exercises using

minors and constructions

- Short test on 28.0.0