- GeoGebra Activities for Sem's iBookpractice 1 - the basicsChord, Secant and Tangent Line Segments with CirclesSimple Exploration of y = mx + bThe angle sum in a triangleMedians of a TriangleMedians of a Triangle with Centroid and DistancesExploring Midsegments in TrianglesExplore the Hinge Theorem and its Converse.Parallelograms #4 - Relationship between DiagonalsParallelograms #3 - Relationship between Interior AnglesParallelograms #2 - Examining Interior AnglesParallelograms #1 - Parallel SidesProportional Measures and Scale Exploration
