Comprehensive
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acute angle an angle of less than ninety degrees.
angle iron a piece of rolled iron or steel in the form of a right angle along its lengthwise dimension, used in construction for joining parts or as support.
angle of incidence the angle that the line of movement of a body or of radiation, meeting a surface, makes with a line that is at right angles to the surface at the point of meeting.
angle of repose the greatest angle of incline at which sand, stones, soil, or the like will not slide or roll downhill.
at an angle slanted up or down; crooked.
cerebellopontine angle a region of the brain between the pons and cerebellum where tumors frequently form.
exterior angle any of the four angles formed outside of two parallel lines where they are intersected by a transverse line. (Cf. interior angle.) [2 definitions]
interior angle any of the angles formed by a line that intersects two parallel lines. [2 definitions]
oblique angle any angle that is not a right angle; acute or obtuse angle.
obtuse angle an angle greater than 90 degrees and less than 180 degrees.
right angle an angle formed by the meeting of two perpendicular lines and measuring ninety degrees.
solid angle an angle formed by three or more planes intersecting in a common point, or formed at the peak of a cone.
straight angle an angle of 180 degrees.
supplementary angle one of two angles that equal 180 degrees when added together.
wide-angle lens a camera lens that covers an angle of view of forty-five degrees or more.