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]

Nuevos recursos

Circle Passing Through 3 Points
Locus Related to Descartes' Folium
רישום חופשי
גיליון אלקטרוני להעלאת נתוני בעיה ויצירת גרף בהתאם
Volume by Shells Around y

Descubrir recursos

Circle Theorem 6 - Angles in a Cyclic Quadrilaterial
Three Perpendicular Bisector
perspective isométrique ou plongeante
Равнобедренный треугольник
Using a Potractor

Descubre temas

Distribución de frecuencias
Baricentro
Círculo
Cálculo de intereses
Mediana