Day 89 Unit 4 Circles Vocabulary

A set of all points that are equidistant from a given point called the center.

• Cycle

• Symmetry

• Circle

• Vertex

A segment whose endpoints are on a circle.

• chord

• circle

• radii

• chicken

Distance from the center of a circle to a point on the circle

• Radius

• Radical

• secant

• serpent

Distance across the circle to its center

• vertex

• radius

• circumference

• diameter

A line that intersects the circle at exactly two points

• secant line

• tangent line

• central angle

• semi-circle

A line that touches the circle in exactly one point

• Secant line

• Tangent line

• central angle

• radius

An angle whose vertex is at the center of the circle

• central park

• central angle

• inscribed angle

An arc whose measure is exactly 180 degrees

• Stargate

• Central Perk

• semi-circle

• central angle

Name the circle

• Circle A
• Circle B
• Circle C
• Circle D

Which best describes segment AB?

• parallel
• radius
• tangent
• diameter

Tags

CCSS.HSG.C.A.2