CIRCLE AND ITS PARTS

A line that intersect in two points.

• Secant

• Diameter

• Tangent

• Chords

It is an angle whose apex is the center of a circle and whose leg are radii intersecting the circle.

• Central Angle

• Tangent

• Inscribed Angle

• Diameter

A line that touches the circle at exactly one point.

• Tangent

• Diameter

• Secant

• Chords

The area of a circle is calculated in what formula?

• A=2πr

• A=1/2π²

• A=r²

• A=4π².

If the circumference of a circle is 20π units, what is the radius?

• 3.183 units

• 3.182 units

• 3.172 units

• 3.283 units

What is the measure of the central angle subtend by an arc that is 1/4 of the circle?

• 1/4

• 1

• 1/2

• 4/6

The line segments that connects two points on the circles circumference.

• Diameter

• Chords

• Radius

• Inscribed Angle

The longest Chord in a circle that passes through the center.

• Diameter

• Radius

• Inscribed Angle

• Chords

What is the relationship between the radius and the diameter of a circle?

• diameter=radius

• radius=2x diameter

• diameter=2x radius

• radius=diameter

What is the formula for the circumference of a circle?

• 2πr

• 1/2 πr

• πr

• 4πr²