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]

新しい教材

רישום חופשי
Pythagorean Theorem: Extension Exercises
Squares Question
What Do You See? (2)
Function art 3D - waiting shed (v2)

教材を発見

SAS construction
Circumference by rolling a circle
A Leaky Bathtub - competing rates & equilibrium
The Changing Diagram, Part 2
Quadratic Function Investigation Form 2
Segment Length

トピックを見つける

サイン
球面
外接円
回転
円柱