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

Classifying Triangles
Building Parallelograms with Set Areas
Superellipse
Building Trapezoids with Set Areas
Parallelogram Anatomy

Découvrir des ressources

Test
TANGENTS TO A CIRCLE
GoGeometry Action 156!
Треугольник
TWINS (22 May) Activity 3

Découvrir des Thèmes

Polygones
Cercle Unité
Somme de Riemann
Pavé Droit
Probabilité Conditionnelle