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

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Portions of a Sphere
Parabola - Write the Equation - Practice
Line Through Two Points and Slope
Inversión esférica de nudos: el nudo trébol y el nudo ocho

Découvrir des ressources

Triangle orthocenter
histogram
Quadratic Function Graph Features
Basic formula
Light Mixing的副本

Découvrir des Thèmes

Triangles
Cosinus
Quadrilatères
Triangles Isocèles
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