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
bewijs stelling van Pythagoras
Rose Curve
Angle Addition: Warm Up Exercises
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם

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lieu
is angles not angels doodoo head
Increasing/Decreasing
The Geometry of Circle
Angle Bisector

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Normal Distribution
Ratios
Equilateral Triangles
Poisson Distribution
Division