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GeoGebraGeoGebra Ders

G.GCO.8 Effortless Trisections

Theorem: If parallel lines cut off congruent segments on one transversal, then they cut off congruent segments on EVERY TRANSVERSAL !!! Interact with this applet for a few minutes. After doing so, complete the scaffolded proof activity given to you at the beginning of class.

Quick (Silent) Demo