Geometric Proof: Exercise

Angle facts with reasons, proofs with algebraic angles, the standard angle proofs, congruent and similar triangles, circle theorem proofs, exam-style circle proofs and vector proofs · eleven levels, a diagram and a model proof (a reason for every step) for every question

Start from the facts you are given, give a reason for every step in the standard wording ("alternate angles are equal"), and end with a conclusion.
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