Plane angle

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

Definition of plane angle:

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

Plane angle

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

The correct answer is C) 180 °

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?

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
• 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

Exercise #1

True or false?

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

Step-by-Step Solution

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.

False

Exercise #2

True or false?

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

False.

Exercise #3

Does the drawing show an adjacent angle?

Not true

Exercise #4

Does the drawing show an adjacent angle?

Not true

Exercise #5

Does the drawing show an adjacent angle?