Perpendicular

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Explains the concept of the instantaneous center of rotation in solid mechanics and how to determine it based on known speeds of points.

Explores descriptive geometry principles, including points, lines, planes, and applications to shadow problems using software like GeoGebra.

Explores the geometry of a triangle, focusing on special lines.

Explores true angle magnitude, reflections, isometries, and symmetries in modern geometry, with practical CAD applications.

Presents examples of relative positions in space and solving problems with parametric equations.

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