# Angle instandard position and reference angles

- Author:
- Vera Hu

- Topic:
- Angles

Angle instandard position and reference angles:
The reference angle is the acute angle formed by the terminal side of the given angle and the x-axis. Reference angles may appear in all four quadrants. The refernce angle is measured from the terminal side of original angle TO the x-axis, not the y-axis.
Angles in quadrant I are their own reference angles.
Now, move the slider and see the location of reference angle.

Vera Hu-Hyneman SCCC selden, NY

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