lcheng – Resources – GeoGebra

DSE15Q19 Example
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2016DSEQ19
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2019DSEQ18
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2018DSEQ17
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DSE15 Q19 Example
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Regular Tetrahedron
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Pyramid with square base (angle between planes)
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Cube (Angle between a line and a plane)
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Chords of a circle
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Angle at the centre & angle at the circumference
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Condition for Congruent Triangles 4 (AAS)
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SSA cannot be condition for congruent triangles
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Condition for Congruent Triangles 5 (RHS)
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Condition for Congruent Triangles 4a (AAS)
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Condition for Congruent Triangles 4 (ASA)
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Condition for Congruent Triangles 3 (ASA)
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Condition for Congruent Triangles 2 (SAS)
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Conditions for Congruent Triangles 1 (SSS)
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Vertically Opposite Angles
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Adjacent Angles on St. Line
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Angles of Parallel Lines
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Transformation 3 (Rotation)
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Transformation 2 (Reflection)
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Transformation 1 (Translation)
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