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

Proving Triangles Similar: Multistep Transformations
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Untitled
Inversión esférica de nudos: el nudo trébol y el nudo ocho
Position and Velocity Vector

Ontdek materiaal

Regular Pentagon
Shortest distance between point and line2
Test
Centres of a triangle
Copia de Fracciones equivalentes. Rompecabezas.

Ontdek onderwerpen

Rotatie
Cirkel
Gelijkzijdige driehoeken
Gelijkbenige driehoeken
2D Vectoren (tweedimensionaal)