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Types of angles

• An angle measuring greater (wider) than 0° but less (narrower) than 90° is called an acute angle.
• An angle 90° wide is called a right angle.
• An angle more than 90° but less than 180° is called an obtuse angle.
• An angle that measures 180° is called a straight angle.
• An angle wider than 180° and narrower than 360° is called a reflex angle].