Angles on a straight line add to 180º, Angles around a point add to 360º, Vertically opposite angles are equal, Alternate angles are equal, Corresponding angles are equal, Co-interior angles add to 180º, 360º - Exterior angles in any polygon add to..., (no. of sides - 2) x 180º - Interior angles in any polygon add to..., 180º - Interior angle + exterior angle = ...,

Angle Rules (Parallel Lines and Polygons)

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