Parts of a Circle

What is the name of the line segment that connects two points on a circle?

• arc

• radius

• chord

• tangent

What is the distance across a circle through its center called?

• diameter

• radius

• perimeter

• circumference

What is the name of the line segment that connects the center of a circle to any point on its circumference?

• diameter

• tangent

• radius

• chord

What is the name of a line that touches a circle at only one point?

• chord

• secant

• tangent

• diameter

What is the name of a line that intersects a circle at two points?

• chord

• secant

• radius

• tangent

What is the name of a line that is perpendicular to the radius of a circle at the point of contact?

• tangent

• diameter

• secant

• chord

What is the name of a line that passes through the center of a circle and divides it into two equal halves?

• tangent

• chord

• radius

• diameter

What is the name of a line that is always twice the length of the radius?

• circumference

• perimeter

• diameter

• radius

What is the name of a line that is always half the length of the diameter?

• diameter/2

• circumference

• perimeter

• radius

What is the name of a line that is always perpendicular to the radius at the point of contact?

• secant

• tangent

• chord

• diameter