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]

Nuove risorse

Graph of Slopes of Tangent Lines
Tracing an Ellipse Using Two Circles
apec
bewijs stelling van Pythagoras
The Geometry of the Coefficients of a Quadratic Function

Scopri le risorse

costo beneficio
Funções Potências Naturais (2 a 20)
bf: Quadratic - Formula & Zeros
length, area and volume
Rotation of a region around y-axis

Scopri gli argomenti

Termini
Punti speciali
Circocentro o circonferenza circoscritta
Calcolo integrale
Funzioni a tratti