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  • Revolution surfaces

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  • Enlargement

    Activity

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  • Theorem 2

    Activity

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  • Theorem 1

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  • Products of segments of secants

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  • Product of segments of chords in a circle

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  • Kite deltoid area

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  • Line plane angle

    Activity

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  • 'Proof' by geogebra

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  • upper lower sums

    Activity

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  • Enlargements demo

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  • Quadrilateral midpoints

    Activity

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  • PDF cumulative

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  • Normal distribution

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  • Tangent limit

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  • Pyramid in square

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  • Explore gradients

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  • Angle bisector

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  • Perpendicular bisector

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  • Cos Sin matrix

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  • Perpendicular gradient

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  • Matrix transformations

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  • Exponential and logarithm

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