John Tranter - GeoGebra

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John Tranter
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Exterior angles of a regular polygon

John Tranter
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The interior angle sum of a polygon

John Tranter
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Angles in a quadrilateral add up to 360°

John Tranter
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Angles in a triangle add up to 180°

John Tranter
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Alternate angles are equal

John Tranter
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Corresponding angles are equal

John Tranter
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Vertically opposite angles are equal

John Tranter
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Angles on a straight line add up to 180°

John Tranter
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Angles at a point add up to 360°

John Tranter
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Tangents from an external point are e…

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The the perpendicular bisector of a c…

John Tranter
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