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]

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Transformation of Functions Assignment
Tangent of a circle Theorem
Skylar's Dynamic Unit Circle
Modelu logarithmig

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Operaciones Aritméticas
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Intervalo de Confianza