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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Portions of a Sphere
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အခြေခံ data အခေါ်အဝေါ်များ
Position and Velocity Vector
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T2 ex 1
Fall Math 2
Dilation Introduction
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Moyenne Géométrique
Trapézoïde
Constructions
Rotation
Triangles