Adding and Subtracting Rational Expressions Explained

What defines a circle in geometric terms?

• A polygon with infinite sides

• A set of points equidistant from a center point

• A square with rounded edges

• A shape with four equal sides

What is the term for a line segment from the center of a circle to any point on the circle?

• Chord

• Diameter

• Secant

• Radius

What is a chord that passes through the center of a circle called?

• Radius

• Tangent

• Secant

• Diameter

How does a tangent line interact with a circle?

• Passes through the center

• Intersects exactly at one point

• Does not touch the circle

• Intersects at two points

What is the point called where a tangent line touches the circle?

• Midpoint

• Vertex

• Point of tangency

• Central point

What is an angle called that has its vertex at the center of the circle?

• Tangent angle

• Inscribed angle

• Central angle

• External angle

What is a minor arc?

• An arc less than 180 degrees

• A full circle

• An arc equal to 180 degrees

• An arc greater than 180 degrees

What is the name of an arc that is exactly 180 degrees?

• Semicircle

• Minor arc

• Quarter circle

• Major arc

How is the circumference of a circle calculated using the radius?

• 2 * Pi * Radius

• Pi * Diameter

• Radius^2 * Pi

• Diameter / Pi

What is the formula to find the area of a circle?

• Pi * Radius^2

• Radius * Diameter * Pi

• 2 * Pi * Radius

• Pi * Diameter^2