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

seo tool
apec
Riemann Sums
Discriminant of y = ax² + bx + c
Transforming Random Variables

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Quadrilaterals & Rectangles
stuff
constuction of a circumcircle of a triangle
สามเหลี่ยม Petagurus
Circles

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Términos
Diagramas de árbol
Álgebra
Porcentajes
Probabilidad