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

Parallel Line Image Maker
Which Quadrilateral is Which?
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
רישום חופשי
Untitled

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C0702Vol_DiskMethodVisual
Per Bisector Code Change
运算区验证点的轨迹
similar
Solving two 1st degree equations

Discover Topics

Centroid or Barycenter
Congruence
LCM and GCD
Perimeter
Complex Numbers