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Apply logical reasoning, including the use of congruence and similarity, to proofs and numerical exercises involving plane shapes (ACMMG244)

- distinguishing between a practical demonstration and a proof (for example demonstrating triangles are congruent by placing them on top of each other, as compared to using congruence tests to establish that triangles are congruent)
- performing a sequence of steps to determine an unknown angle giving a justification in moving from one step to the next.
- communicating a proof using a sequence of logically connected statements

Shapes (Geometry), Reasoning, Congruence (Geometry), Mathematical proofs, Similarity (Geometry)