A right angle always has 90°.
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A right angle is an angle measuring 90 degrees.Two lines or line segments that
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1. Learn to recognize certain angles by just looking at them. For instance, if your angle is a straight line, you should know right away that it is 180 degrees. It is a straight angle
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Acute angle  Less than 90 degrees. Right angle  90 degrees. Obtuse angle  Greater than 90 degrees.
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