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GeoGebraClasse GeoGebra

Plane Geometry

Archimedes' Book of Lemmas: Proposition 1

Midpoint Theorem

Alternate Segment Theorem (Proving Part I)

Alternate Segment Theorem (Proving Part II)

Identify angles for Alternate Segment Theorem

Summary Question

What If the Tangent Becomes a Secant for Tangent-Chord Theorem?

Extension: Midpoint Theorem (Trapezium)

Extension: Midpoint Theorem (Proving Part II)

Extension: Varignon's Theorem