Acute angle: greater than 0 but less than 90 degrees
Right angle: 90 degrees
Obtuse angle: greater than 90 but less than 180 degrees
Reflex angle: greater than 180 but less than 360 degrees
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No. The refractive index is an absolute measure that determines by how much the angle of incidence is different from the angle of reflection.
they both measure the angle in degrees
bisector
each measure of the angle at point h has a measure of
the answer is twice. the angle of rotation is twice the measure