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]

New Resources

Slope and Road Signs
Damped Trochoidal Curve
רישום חופשי
Untitled
Publish app "Public" test

Discover Resources

Area Under a Curve
平行四邊形 10
Geometry Problem
Motion on a 3D Parametric Curve
Vector Equation of Line

Discover Topics

Quadratic Equations
Mathematics
Quadrilaterals
Tangent Line or Tangent
Trigonometry