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

Proving Triangles Similar: Multistep Transformations
apec
Thales' Intercept Theorem
Angle Bisector: Quick Warm Up Questions
Text with alpha background color

Découvrir des ressources

ThreeCircles-HudsonMohawke-TC
Prova rotazione1
perpendicular lines
Chladni Figures
รูปคลี่พีระมิด
Open Middle: Build a Trig Equation (3)

Découvrir des Thèmes

Variance
Triangles Equilatéraux
Équations Linéaires
Fractions
Somme de Riemann