Vocabulary Review for Chapter #9 Test

Fill in the blank: The distance around a circle is called the _________.

• Circumference.

• Diameter.

• Radius.

• Chord.

Fill in the blank: A part of a circle that is defined by two endpoints is called an _________.

• Arc.

• Chord.

• Sector.

• Tangent.

Fill in the blank: An arc with a measure less than 180 is called a _________.

• Minor Arc.

• Major Arc.

• Semicircular Arc.

• Reflex Arc.

Fill in the blank: An arc with a measure greater than 180 is called a _________.

• Major Arc.

• Minor Arc.

• Semi Arc.

• Reflex Arc.

Fill in the blank: An arc that measures 180 is called a _________.

• Semicircle.

• Circle.

• Sector.

• Quadrant.

Fill in the blank: Arcs in the same circle or in congruent circles that have the same measure are called _________.

• Congruent Arcs.

• Equal Chords.

• Similar Arcs.

• Comparable Arcs.

Fill in the blank: Arcs in a circle that have exactly one point in common are called _________.

• Adjacent Arcs.

• Convergent Arcs.

• Secant Arcs.

• Divergent Arcs.

Fill in the blank: The measure of an arc is the measure of its _________.

• Central Angle.

• Inscribed Angle.

• Chord Length.

• Tangent Angle.

What is the definition of a Tangent?

• A line in the plane of a circle that intersects the circle in exactly one point.

• A line that passes through the center of the circle.

• A line that does not intersect the circle at all.

• A line that crosses the circle in exactly two points.

What is the definition of a Point of Tangency?

• For a line that intersects a circle in only one point, the point at which they intersect.

• For the center of a circle where all radii converge.

• For a point on a circle that is diametrically opposite to a given external point.

• For a point on a circle closest to an external point along the line connecting the external point and the circle's center.