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A Vertex is the point that 2 or more lines connect.

When an angle is written given the letters of the lines/ points, the point where the lines connect are always the middle letter.

For ∠XYZ, the vertex would be point Y, because it is the middle letter.

An angle is formed by two rays that have a common endpoint which is known as the vertex of the angle

The vertex of the angle ∠XYZ is point Y

The reason the above selection is correct is as follows;

There are three methods used in naming an angle, including;

  • Using three capital letters with the middle letter representing the vertex
  • Using only one capital letter, if the angle will not be confused with other angles
  • Using a small letter or number in the middle of the angle

. The given angle is ∠XYZ, therefore, the middle letter, Y, is the vertex

The vertex point is Y

Learn more about angles here:

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