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

Building Triangles with Set Areas
Building Trapezoids with Set Areas
Rolling an Equilateral Triangle
Untitled
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם

Discover Resources

sineX-2
Intro to Geogebra 4.5
Congruent Shapes
correlation
HW #1
Partial Fraction Decomposition Calculator

Discover Topics

Distributions
Area
Tangent Line or Tangent
Cylinder
Integral Calculus