Unit 6 PreTest

A portion of the circumference of a circle

• Arc

• Circumscribed Angle

• Semicircle

• Circumscribed Circle

The measure of the angle at the center of the circle that creates an arc

• Inscribed Angle

• Terminal Side

• Secant Line

• Arc Measure

An angle whose vertex is the center of the circle

• Central angle
• Radial angle
• Tangential angle
• Peripheral angle

A segment whose endpoints both lie on the circle

• Chord

• Minor Arc

• Tangential angle
• Peripheral angle

The point of intersection of the perpendicular bisectors of a triangle that is inscribed in a circle; also the center of the circle circumscribed around a given triangle

• Unit Circle

• Major Arc

• Circumcenter
• Centroid

An angle whose vertex is outside the circle and whose sides are made by two intersecting tangent lines to a circle

• Circumscribed Circle

• Negative Angle

• Reference Angle

• Circumscribed Angle

A circle that passes through all the vertices of a polygon

• Arc Measure

• Standard Position

• Circumcenter

• Circumscribed Circle

A line that is tangent to two coplanar circles

• Arc Measure

• Radian

• Common Tangent

• Coterminal Angles

Angles that share the same initial side and the same terminal side of angles of rotation

• Point Of Tangency

• Unit Circle

• Coterminal Angles

• Minor Arc

A quadrilateral inscribed in a circle where all 4 vertices lie on the circle

• Positive Angle

• Terminal Side

• Cyclic Quadrilaterals

• Initial Side