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]

New Resources

Trefoil Knot
¿Quién llegará más lejos en el mundial?
Untitled
z`]]
Damped Trochoidal Curve

Discover Resources

Translation #1
Hexagon
Rombus - Ruben Moreno
Adiabatic Work

Discover Topics

Coordinates
Tree Diagrams
Scatter Plot
LCM and GCD
Unit Circle