Angle sign - Examples, Exercises and Solutions

Angle Notation

Angle notation is the way of naming them to know which angle we are referring to. When reading the data, it is customary to mark the given angles and the angle that needs to be found. In this way, we can obtain a better visual image that allows us to find the solution in the most efficient way possible. When we want to demonstrate something or express the angles verbally, we must designate them in a correct and clear manner. Besides, correct notation is important and indispensable to avoid errors.

The main angle symbol:

image of main_angle_symbol

Suggested Topics to Practice in Advance

  1. Right angle
  2. Acute Angles
  3. Obtuse Angle
  4. Plane angle

Practice Angle sign

Exercise #1

Name the angle in the figure below:

AAABBBCCC

Video Solution

Step-by-Step Solution

We are looking for an answer where the letter B, which represents the angle in the drawing, is in the middle.

Therefore, answer A is correct since the letter B is in the middle:

ABC ABC

Answer

ABC ∢\text{ABC}

Exercise #2

Name the angle of the figure:

BBBKKKDDD

Video Solution

Step-by-Step Solution

We are looking for an answer where the letter D, which represents the angle in the drawing, is in the middle.

Therefore, answer B is correct since the letter D is in the middle:

BDK BDK

Answer

BDK ∢\text{BDK}

Exercise #3

Mark the angle of the figure:

AAABBBCCC

Video Solution

Answer

ABC ∢\text{ABC}

Exercise #4

Mark the angle of the figure:

CCCGGGFFF

Video Solution

Answer

CGF ∢\text{CGF}

Exercise #5

Mark the angle of the figure:

DDDFFFGGG

Video Solution

Answer

GFD ∢\text{GFD}

Exercise #1

Mark the angle of the figure:

GGGDDDBBB

Video Solution

Answer

BDG ∢\text{BDG}

Exercise #2

In which of the figures is the angle EDAmarked?

Video Solution

Answer

AAABBBCCCDDDEEE

Exercise #3

In which of the figures is the angle EBCmarked?

Video Solution

Answer

AAABBBCCCDDDEEE

Exercise #4

In which of the diagrams is angle C marked?

Video Solution

Answer

AAABBBCCCDDDEEE

Exercise #5

What is the angle marked in the diagram?

AAABBBCCCEEEDDD

Video Solution

Answer

EBD,DBE ∢EBD,∢DBE

Exercise #1

Is it possible to mark all angles with a single letter?

AAABBBCCCDDD

Video Solution

Answer

Yes

Exercise #2

Is it possible to mark all angles with a single letter?

AAABBBDDDCCC

Video Solution

Answer

No

Exercise #3

Is it possible to mark all angles with a single letter?

AAABBBCCCDDDEEEFFF

Video Solution

Answer

Yes

Exercise #4

Is it possible to label all of the marked angles with a single letter?

EEEDDDFFF

Video Solution

Answer

Yes

Exercise #5

Is it possible to mark all angles with a single letter?

AAABBBCCCDDD

Video Solution

Answer

No

Topics learned in later sections

  1. Angle Bisector
  2. The Sum of the Interior Angles of a Triangle
  3. Sides, Vertices, and Angles
  4. Types of Angles
  5. Sum and Difference of Angles
  6. Sum of Angles in a Polygon
  7. Exterior angles of a triangle