alternate angles


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Related to alternate angles: vertically opposite angles

alternate angles

pl n
(Mathematics) two angles at opposite ends and on opposite sides of a transversal cutting two lines

al·ter·nate angles

(ôl′tər-nĭt)
Two angles formed on opposite sides of a line that crosses two other lines. The angles are both exterior or both interior, but not adjacent.
References in periodicals archive ?
This lesson however, did not explain how to calculate corresponding and alternate angles on parallel lines, as this was the focus for the experiment.
She pondered the clouds, how they looked different from alternate angles.
To accept this as an accurate measure of the angle of elevation, it must be understood that, "the alternate angles of a transversal of two parallel lines are equal" (ACARA, 2010).
99, laid at alternate angles, with Black charger plates underneath, pounds 1.
But as the actors and camera move around, boundaries are ignored, and thesps often cross the middle line to the other side or turn up in alternate angles of the same scene.
29 of the Elements, the notorious Parallel Postulate: "A straight line falling on parallel straight lines makes alternate angles equal .