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slip gauges are the end standard devices used to measure length. angle slipgauges are used to measure angles . both of them can wring with each other .. and evrything is same : )
If I understand the question correctly, then 0 degrees or 180 degrees.
hmm... i am not sure I understand what you are trying to ask?An angle is formed by two rays with a common endpoint. The angle bisector is a ray or line segment that bisects the angle, creating two congruent angles. Therefore angle QPB is the same as APQ.
When a light ray hits a surface at an angle (called the angle of incidence) and all or part of it is reflected at an angle (called the angle of reflection), the law of reflection states: the angle of reflection equals the angle of incidence. The angle is measured from an imaginary line drawn perpendicular to the surface at the point the ray hits the surface. what the hecka i dont understand this crap i hate math
why dont the central angle change regardless the size of the circle