Labeling Parts of Circles

Front

What is the term for a line segment that connects two points on the circle?

Back

Chord

Front

What is the name of the angle formed by two radii of a circle?

Back

Central Angle

Front

What is the term for the longest chord in a circle?

Back

Diameter

Front

What is the term for a line that touches the circle at exactly one point?

Back

Tangent

Front

What is the distance from the center of the circle to any point on the circle?

Back

Radius

Front

What is the term for an angle whose vertex is on the circle and whose sides contain chords of the circle?

Back

Inscribed Angle

Front

What is the term for a line segment that intersects the circle at two points?

Back

Secant

Front

What is the relationship between a central angle and its corresponding inscribed angle?

Back

The inscribed angle is half the measure of the central angle.

Front

What is the area of a circle with a radius of r?

Back

Area = πr²

Front

What is the circumference of a circle with a diameter of d?

Back

Circumference = πd