Plane angle

🏆Practice types of angles (right, acute, obtuse, flat)

Definition of plane angle:

The plane angle is the one that measures 180° 180° .

Which of the 4 angles shown in the figure corresponds to the description of the plane angle?

4 Definitions of angles

The correct answer is C) 180 °

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Test yourself on types of angles (right, acute, obtuse, flat)!


True or false?

The sum of two acute angles can be greater than 180 degrees?

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If you are interested in learning more about other angle topics, you can enter one of the following articles:

  • Angle Notation
  • Sides, Vertices, and Angles
  • Bisector
  • Right Angle
  • Adjacent Angles
  • Vertically Opposite Angles
  • Alternate Angles
  • Corresponding Angles
  • Sum of the Angles of a Triangle
  • Sum of the Angles of a Polygon
  • Sum and Difference of Angles

On the website of Tutorela you will find a variety of articles on mathematics.

Examples and exercises with solutions of plane angle


True or false?

One of the angles in a rectangle may be an acute angle.


One of the properties of a rectangle is that all its angles are right angles.

Therefore, it is not possible for an angle to be acute, that is, less than 90 degrees.



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