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]

Nouvelles ressources

Graph of Slopes of Tangent Lines
Random Polar Curve (1)
Domain of f(x,y)
Tracing an Ellipse Using Two Circles
Row and Column Views of Systems of Linear Equations

Découvrir des ressources

Ceva's theorem (proof)
#1 Exploration 7.3
*Funny face Luca (RO)
Info2
vek_Ortsvektor

Découvrir des Thèmes

Nombres Rationnels
Rotation
Sections Coniques
Histogramme
Nombres Complexes