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]

Nieuw didactisch materiaal

Folding door
Tangent Plane to a Sphere
Proving Triangles Similar: Multistep Transformations
အခြေခံ data အခေါ်အဝေါ်များ
Two Triangle Theorem

Ontdek materiaal

Mt Problem Model
Levi_Bloch_OppositeAnglesParallelogram
การสะท้อน
คิดเลขเร็ว
Alternate Angle Theorem

Ontdek onderwerpen

Veelhoeken
Raaklijn
Spiegeling
Optelling
Ruit