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

Identify Opposite, Adjacent, Hypotenuse
Two Triangle Theorem
apec
bewijs stelling van Pythagoras
Proving Triangles Similar by Dilation

Descubrir recursos

Proof Without Words
opacity
thomas unmessupable square
Lattice point with GeoGebra
IM mechanical characteristic

Descubre temas

Números Racionales
Razones
Ortocentro
Programación Lineal
Histograma