Circles Vocabulary Flash Cards

Front

A segment that has one endpoint at the center and the other endpoint on the circle is the __________.

Back

radius

Front

An angle whose vertex is the center of a circle is a(n) ______.

Back

central angle

Front

A tangent line of a circle is...

Back

A line that touches the circle only once

Front

A chord is a segment that connects ___________

Back

2 endpoints of a circle

Front

Two circles are congruent if they have the same __________

Back

Radius

Front

Two circles are concentric if they have the same ______

Back

Center

Front

True or False: An equation for Circumference is C = πr²

Back

False

Front

Which of the following names a diameter? Options: segment AC, segment DB, segment AB, segment BC

Back

segment AC

Front

What is the part of the circle highlighted in red called?

Back

semi-circle arc

Front

What is the part of the circle highlighted in red called?

Back

minor arc