SeamusMcCabe – Resources – GeoGebra

Theorem 15 - The Converse of Pythagoras' Theorem
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Theorem 19 - Angles in a circle, standing on an arc.
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Theorem 18 - Area of a Parallelogram
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Theorem 17 - A Diagonal Bisects the Area of a Parallelogram
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Theorem 16 - Base times Height in a Triangle
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Theorem 14 - Pythagoras' Theorem
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Theorem 13 - Similar Triangles
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Theorem 12 - Two Sides of a Triangle cut by a line Parallel
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Theorem 03 - Alternate Angles and Parallel Lines
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Theorem 09 - Opposite Sides and Angles in a Parallelogram
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Theorem 06 - The Exterior Angle of a Triangle
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Theorem 02 - Isosceles Triangle
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Theorem 04 - Angles in a Triangle
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Theorem 07 - Comparing Sides and Angles in a Triangle
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Theorem 05 - Corresponding Angles
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Theorem 08 - The Sum of Two Sides of a Triangle
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Theorem 01 - Vertically Opposite Angles
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Theorem 11 - Three Parallel Lines Cutting a Transversal
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Theorem 10 - The Diagonals of a Parallelogram
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