In geometry, a segment whose endpoints lie on a circle is called what term?

In geometry, a segment whose endpoints lie on a circle is called what term?

• A. Chord
• B. Chord progression
• C. Cadence
• D. Bridge

Answer: (A)

A segment whose endpoints lie on a circle is called a chord. In a circle, any line segment that connects two points on the circle lies entirely inside the circle, and that piece is the chord. If the endpoints are opposite on the circle, the chord is a diameter, which is the longest possible chord. The other terms listed belong to music (chord progression, cadence) or to a non-geometry context (bridge), so they aren’t used to name a segment on a circle. Think of drawing two points on the circle and drawing the straight line between them—the part of that line inside the circle is the chord.

A segment whose endpoints lie on a circle is called a chord. In a circle, any line segment that connects two points on the circle lies entirely inside the circle, and that piece is the chord. If the endpoints are opposite on the circle, the chord is a diameter, which is the longest possible chord. The other terms listed belong to music (chord progression, cadence) or to a non-geometry context (bridge), so they aren’t used to name a segment on a circle. Think of drawing two points on the circle and drawing the straight line between them—the part of that line inside the circle is the chord.