Parts of a Circle and Vocabulary

What is a segment whose endpoints are on the circle?

• chord

• center

• minor arc

• tangent

What is a chord that contains the center of a circle?

• diameter

• radius

• inscribed angle

• minor arc

What is a line or ray that intersects a circle at 2 points?

• secant

• tangent

• central angle

• chord

What is a line, segment, or ray that intersects the circle at exactly one point?

• tangent

• diameter

• inscribed angle

• semicircle

What is a radius?

• segment with one endpoint on the center of the circle and one endpoint on the circle

• segment that goes through the center with both endpoints on the circle

• segment whose endpoints are on the circle

• all points in a plane equidistant from a given point

What is an angle formed by 2 chords that have a vertex on the circle?

• inscribed angle

• central angle

• semicircle

• minor arc

What is an angle whose vertex is at the center of a circle?

• central angle

• inscribed angle

• semicircle

• major arc

What is an arc of a circle representing half the length of a circle? The measure is equal to 180.

• semicircle

• major arc

• minor arc

What is an arc whose measure is less than 180 and equal to its central angle?

• minor arc

• semicircle

• major arc

What is an arc whose measure is greater than 180 and equal to its central angle?

• major arc

• semicircle

• minor arc