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]

Neue Materialien

Special Right Triangles 30°-60°-90° and 45°-45°-90°
分數化百分數：練習
Cosine in Cartesian and Polar Coordinates
Adding Decimal Numbers and Shortest Path Strategies
Tangent in Cartesian and Polar Coordinates

Entdecke Materialien

The Golden Ratio Within A Pentagram
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Calculus-IntegralApps3-Volumes
The Example
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Exponential distribution

Entdecke weitere Themen

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Abschnittsweise definierte Funktionen