Key Terms Circle

• chord

• secant

• diameter

• tangent

• radius

The distance across the circle through the center is called the...

• radius

• diameter

• circumference

• area

The red line represents the ______ of the circle.

• radius

• diameter

A line that intersects a circle at one point

Example: Line 𝑋𝑀

• Tangent

• Secant

• Chord

• Radius

Answer explanation

What is the definition of a secant?

• A line segment whose endpoints are on the circle.

• A line that intersects a circle in one point.

• A line that intersects a circle in two points.

• A line segment which intersects the circle at the point of secancy.

What is DG?

• Secant

• Radius

• Chord

• Tangent

What is this called?

• Chord

• Minor Arc

• Circumference

• Secant

Click on all the true statements about the diameter of a circle.

• The diameter goes the full way across the circle through the center.

• To find the diameter divide the radius by 2

• To calculate the diameter multiply the radius by 2

• The diameter goes half way across the circle

Which segment is a radius?

Radius is __________.

• The distance across a circle through the center.

• The distance from the center to any point on a circle.

• A collection of points on the same plane, equidistant from the same point.