Exploring the Parts of a Circle

What defines a circle in geometry?

• All points at a fixed distance from a center

• A type of ellipse

• A shape with four equal sides

• A polygon with infinite sides

What is the term for the fixed point in the middle of a circle?

• Center

• Diameter

• Circumference

• Radius

What do we call the distance from the center to any point on the circle?

• Chord

• Diameter

• Radius

• Arc

Identify the line segment whose endpoints lie on the circle.

• Chord

• Arc

• Diameter

• Radius

Which part of the circle is the longest chord that passes through the center?

• Diameter

• Chord

• Arc

• Radius

What is the curved portion of the circle called?

• Diameter

• Radius

• Arc

• Semicircle

What do we call an arc that covers half of the circle?

• Quarter-circle

• Minor arc

• Full circle

• Semicircle

What term describes the total linear distance around the circle?

• Radius

• Diameter

• Arc

• Circumference

Which part of the circle is equidistant to all points on the circle?

• Circumference

• Diameter

• Radius

• Center

What is the name of the half of the circle formed by an arc?

• Quadrant

• Semicircle

• Major arc

• Minor arc