Angle a**: This angle has a square symbol at its vertex, indicating it measures exactly 90^.
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ScanSolve AI Answer
Here are the classifications for each angle:
Angle a: This angle has a square symbol at its vertex, indicating it measures exactly $90^\circ$.
Type: Right angle*
Angle b: This angle is wider than $90^\circ$ but less than $180^\circ$.
Type: Obtuse angle*
Angle c: This angle is narrower than $90^\circ$.
Type: Acute angle*
Angle d: This angle has a square symbol at its vertex, indicating it measures exactly $90^\circ$.
Type: Right angle*
