right angle, acute, obtuse and
right angle, acute
plain obtuse angles, because of its size, can be right, acute, obtuse and flat.
consecutive angles, adjacent and vertical angles Two angles are
consecutive if they have a common side and vertex.
Two angles are adjacent if they have one side and common vertex and the other side on the same line.
Two angles are vertical angles if they have the common vertex and sides are a continuation of the other.
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