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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Angle Addition: Warm Up Exercises
Viviani's Curve

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Mengenal Bagian-Bagian Lingkaran
Spirala poligonov... 17
Extreme Values

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Distribución de frecuencias
Triángulos Semejantes
Procesos estocásticos o aleatorios
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