Euclidean Geometry in Action (with GeoGebra) - S.1 Tasks

Tasks for Secondary One

1. Definition and Axioms:

4. Challenging tasks:

1. Definition and Axioms:

Supplementary Angles

Interior Angles of Parallel Lines

2. Theorems:

Vertically Opposite Angles

Angles at a Point

Angles of Parallel Lines

Angles of a Triangle

3. Revision:

Vertically Opposite Angles

Angles at a Point

Angles of Parallel Lines

Angles of a Triangle

4. Challenging tasks:

Equal angles in two set of parallel lines

A stick-man problem

A star polygon problem

A star polygon problem (II)

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