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]

Nuevos recursos

Billard V5.2 and V6
Average Value of a Function
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Area Between Two Curves

Descubrir recursos

H-Angle Sum of a Triangle
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Ms. Marina - Fibonacci Spiral 2
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Crisantos.Maia_Reflection Across X-Axis

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Congruencia
Puntos Notables
Funciones escalonadas
Función Tangente
Baricentro