straight angle

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Related to straight angles: Vertical Angles, Right angles

straight angle

[′strāt ‚aŋ·gəl]
(mathematics)
An angle of measure one-half revolution or 180°, whose sides lie on the same straight line but extend in opposite directions from the vertex.
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References in periodicals archive ?
Because two straight angles make a revolution, the size of a straight angle is 360[degrees] / 2 = 180[degrees].
Issues such as the angles of the connectors (only right or straight angles), and how much "bendability" (or the tightness of the curve that the piping could endure without deforming) were other practical, but also mathematical, issues with which students had to deal.
In a sing-song voice, David chants, "A right angle is 90 degrees, a straight angle is 180 degrees, an acute angle is less than 90 degrees, and an obtuse angle is greater than 90 degrees and less than 180 degrees." David's approach to remembering facts about special angles illustrates the challenges some teachers face in supporting children's conceptual understanding of angle concepts.

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