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Angle geometry

Angle geometry: the most often used equipment of geometry is goniometer. This method supplies data about joint angle change without recording. This device supplies information about angular and angular acceleration. The problem with this device is that it has only one degree of freedom while joints may have more. Potentiometer is a three terminal resistor with a rotating or sliding contact that forms an adjustable voltage divider. A goniometry with a rubber tape is capable to examine joint angular in more dimensions (Barton, 1983).