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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z`]]
apec
Rose Curve
Cartesian vs Polar
အခြေခံ data အခေါ်အဝေါ်များ

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Algebra Tiles4
Weight Force Model
C0503X20InverseFunctions
Rotacijska tijela
Slope of the Line Tangent to the Sine Curve
AAS rules of congruency

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Funzioni quadratiche
Sottrazione
Rettangolo
Seno
Triangoli