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Theorem 1.20-1.23 Tests of Concyclic Points

Auteur :Hlho, benny varghese, wingyuen kan, Law King

Theorem 1.20 Any 3 non-collinear points are concyclic. Only one circle can be drawn passing through them.

Theorem 1.21 converse of angles in the same segment

Theorem 1.22 opp. angles supp.

Theorem 1.23 ext. angle = int. opp. angle

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