PARTS OF A CIRCLE

Front

What is the radius of a circle?

Back

The radius is the distance from the center of the circle to any point on its circumference.

Front

What is the diameter of a circle?

Back

The diameter is a straight line that passes through the center of the circle, connecting two points on its circumference. It is twice the length of the radius.

Tags

CCSS.HSG.C.A.2

Front

What is the circumference of a circle?

Back

The circumference is the total distance around the circle.

Front

What is a central angle?

Back

A central angle is an angle whose vertex is at the center of the circle and whose sides are radii that extend to the circumference.

Tags

CCSS.HSG.C.A.2

Front

What is a tangent line?

Back

A tangent line is a straight line that touches the circle at exactly one point.

Front

What is a secant line?

Back

A secant line is a straight line that intersects the circle at two points.

Front

What is a chord?

Back

A chord is a straight line segment whose endpoints lie on the circumference of the circle.

Front

What is an arc?

Back

An arc is a portion of the circumference of a circle.

Tags

CCSS.HSG.C.B.5

Front

What is a major arc?

Back

A major arc is an arc that is larger than a semicircle.

Tags

CCSS.HSG.C.B.5

Front

What is a minor arc?

Back

A minor arc is an arc that is smaller than a semicircle.

Tags

CCSS.HSG.C.B.5