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9 November, 11:13

Given: AB || DC ∠A ≅ ∠D Prove: ΔABC ≅ ΔDCB Isabelle proves that the triangles are congruent by using the parallel lines to determine a second set of angles are congruent. What statement and reason could she have used?

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  1. 9 November, 11:55
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    Given that AB║DC and ∠A≈∠D, then to prove that ABC is congruent to DCB Isabelle will have to use SAS (side-angle-side) postulate. This is because we have been given sides and angle that are equal to each other.
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