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Lesson 86. Properties of Parallel Lines
Author:
Norm Prokup
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]
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Untitled
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
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