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]

Uusia resursseja

bewijs stelling van Pythagoras
Fractal Tétraèdre. Dilatation -1/2 centre triangles
Tracing an Ellipse Using Two Circles
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Nikmati Keunggulan Di Bandar Judi Terpercaya

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