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

Identifying Sine, Cosine, Tangent Ratios in Right Triangles (Quick)
apec
Exploring Number of Squares on the Diagonal of a Rectangle
Semicircular Cross Sections
Tanzanian Ngoma - Model 3

Descubrir recursos

Programme de construction d'un triangle
Sine(A+B)
Day8#4SofaDrewRische
Determining Whether or Not Two Shapes are Dilated Images of Each Other
More Angle Arc Theorems

Descubre temas

Puntos Notables
Triángulos
Planos
Mediana
Regresión Lineal