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Apply logical reasoning, including the use of congruence and similarity, to proofs and numerical exercises involving plane shapes (ACMMG244) * presenting formal geometric arguments to develop skills in mathematical reasoning and presenting reasoned arguments (proofs) * using mathematical language and notation, based on congruence and similarity * applying an understanding of relationships to deduce properties of geometric figures (for example the base angles of an isosceles triangle are equal) * 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)
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