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straight angle
noun
- the angle formed by two radii of a circle that are drawn to the extremities of an arc equal to one half of the circle; an angle of 180°.
straight angle
noun
- an angle of 180°
straight angle
/ strāt /
- An angle having a measure of 180°.
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Word History and Origins
Origin of straight angle1
First recorded in 1595–1605
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Example Sentences
That there exists a triangle, the sum of whose angles is congruent to a straight angle, the Euclidean; II.
From Project Gutenberg
The elliptic or Cayley-Klein hypothesis assumes that the angular sum is greater than a straight angle.
From Project Gutenberg
That there exists a triangle the sum of whose angles is greater than a straight angle, the Cayley-Klein.
From Project Gutenberg
This was excluded by the Greeks because their idea of angle required it to be less than a straight angle.
From Project Gutenberg
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