Unit 9 Contents

Kinds of Angles

A right angle is easily recognized as a 90° angle or a square angle. Corners of
books, papers, floors, and desks are usually right angles.

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Acute angles are smaller, or sharper, than right angles.

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Obtuse angles are larger, or wider, than right angles, but not so wide that the angle is a straight line.

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5. Make a table like the one shown below and list two examples of each type
   of angle in your classroom. Make a sketch of each angle.