Parallel lines (angle of inclination and slope)

Autor:Lee Ka Shun

Move point A or point B to change the slope of the straight lines. Notice the relationship between the angles of inclination and the slopes of the two straight lines.

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Limaçons
Special Right Triangles 30°-60°-90° and 45°-45°-90°
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Cosine in Cartesian and Polar Coordinates

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Slope-Intercept Graph
hydrogen bomb v_1
Richelieu
Types of Triangles
การบวกจำนวนเต็ม
Supplementary Angles

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Cuadriláteros en general
Test de hipótesis
Simetrías
Paralelepípedo
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