Lesson 86. Properties of Parallel Lines

T6-criterion for parallel lines

[bgcolor=orange] If two lines are intersected by a third line, and alternate interior (or exterior) angles are equal, then the original two lines are parallel. [/bgcolor]

Nouvelles ressources

Angle Addition: Warm Up Exercises
Model sferyczny - dwunastościan-dwudziestościan
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Fourier Lissajous (Mechanical)

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CircleShift-MrOMalley-98gh76yz
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Cetusan Minda 6
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Logique
Calcul
Constructions
Fonctions en Escalier
Fonctions Quadratiques