What is the vertex of an angle?

The video tutorial explains the concept of a vertex in geometry, focusing on its role as the endpoint where two rays meet to form an angle. It describes how rays extend to infinity and how the vertex is the point of rotation for measuring angles. The tutorial also differentiates between the initial and terminal sides of an angle, emphasizing the importance of the vertex in understanding angle formation and measurement.

What is the vertex of an angle?

• The point where two lines intersect

• The center of a circle

• The endpoint where two rays meet to form an angle

• The midpoint of a line segment

Which of the following best describes an angle?

• A circle with a fixed radius

• A line segment with two endpoints

• A figure with two rays extending from a common endpoint

• A shape with three sides

What is the endpoint of a ray?

• A point that is the center of a circle

• A point that extends to infinity

• A point that is fixed and does not move

• A point that is the midpoint of a line

What are the initial and terminal sides of an angle?

• The two sides of a triangle

• The two rays that form an angle

• The two diameters of a circle

• The two endpoints of a line segment

What role does the vertex play in an angle?

• It is the midpoint of the angle

• It is the point around which the angle rotates

• It is the center of the angle

• It is the endpoint of the angle