Two angles, not adjoining one another, that are formed on opposite sides of a line that intersects two other lines. If the original two lines are parallel, the alternate angles are equal.
- The cross-ply tyre is made up of superimposed layers of textile cord running at alternate angles from bead to bead.
- So in the figure above, as you move points A or B, the two alternate angles shown always have the same measure.
Definition of alternate angles in:
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