Geometry

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Straight Angles

A Straight Angle measures 180 degrees.
Straight Angles are like making a u-turn in
car.

If you start the angle from zero, first is Acute
Angle, then Right Angle, then Obtuse Angle
and then a Straight Angle.

Straight Angles Form a Straight line.

Classifying Angles

Measuring Angles

Naming Angles