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

Position and Velocity Vector
apec
အခြေခံ data အခေါ်အဝေါ်များ
Line Through Two Points and Slope
Angle Bisector: Quick Warm Up Questions

Discover Resources

Mrs. Twietmeyer's GeoGebraBook
prisma in 3_dyn_2
A little Geogebra 3
Circumcenter of a Triangle (Finished Product)
my file
Duchamp Rotorelief

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Kite
Root
Piecewise Functions
Median Value
Fractions