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Watch Later 4:46

11.4-Angles in the Alternate Segments_eng

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11.3.2-Tangents from an External Point_eng 1

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11.3.1-Basic Properties of Tangents to Circles_eng

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4S 數學 - 7.1B a(x-h)^2+k

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4S Math - 7.1B a(x-h)^2+k

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4S 數學 - ax^2+bx+c

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11.2-Tests for Cyclic Qudarilaterals_eng

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4S Math - 7.1A ax^2+bx+c

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11.1.2-Exterior Angles of a Cyclic Quadrilateral_eng

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