Free tool to calculate corners and angles for work and math geometry. It can specify an angle by using a point on each ray and the vertex. Many different names exist for the same angle. It measure the size of an angle using degrees. An acute angle is an angle measuring between 0 and 90 degrees. An obtuse angle is an angle measuring between 90 and 180 degrees.A right angle is an angle measuring 90 degrees. Two lines or line segments that meet at a right angle are said to be perpendicular
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