yijie91 – Resources – GeoGebra

Circle Properties
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Personal worksheets
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Direct and Inverse Proportion
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Interior angles of cyclic quadrilateral
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Angles in the same segment
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Perpendicular bisector of chord in circle
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Angles at centre and cirumference of circle
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Alternate segment theorem
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Angles in a cyclic quadrilateral
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Gradient of small differences
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Others
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