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]

Nieuw didactisch materiaal

挂谷问题——三尖瓣形
Slope Illustrator (2)
Function art 3D - waiting shed
Congruent Sides & Angles in △s: Exploration
Pythagorean Theorem: Quick Illustrator

Ontdek materiaal

Coxeter- Theorem 9.14 - Figure 9.1D
The unit circle
Bisect a segment
Properties of Parallelograms
Proportionality Theorems 1

Ontdek onderwerpen

Congruentie
Correlatie
Vectoren
Normaalverdeling
Logaritmische Functies