An angle is a figure formed by two lines or edges diverging from or crossing a common point (vertex) ? an acute angle being less than 90?, a right angle being 90?, and an obtuse angle being greater than 90? but less than 180? ? measured with a protractor. Or, the figure formed by two planes diverging from a common line. "Angle" can refer to the space between such lines or surfaces, and it can also refer to a direction or point of view. Among the kinds of lenses, a wide-angle lens is the opposite of a telephoto lens.Also see aculeate, angle of incidence, align, bevel, bias, chamfer, Daguerreotype, fold, miter, negative, perpendicular, point, positive, straight, tangent, and undercut.

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