Which best describes this triangle? A. All sides are different lengths; one angle measures 90°. B. All sides are different lengths; one angle measures greater than 90°. C. All sides are different lengths; all angles measure less than 90°. D. All sides are the same length; all angles are the same measure.
REMEMBER that a triangle having one angle of 90 degrees is called 'right triangle' a triangle with an angle more than 90 degrees is called 'obtuse triangle' a triangle with angles less than 90 degrees is called 'acute triangle' a triangle which is equi-angular and all sides are equal is called 'equilateral triangle'
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