Circles Vocabulary Check

Front

What is a Major Arc in a circle?

Back

A Major Arc is an arc that measures more than 180 degrees.

Front

What is a Minor Arc in a circle?

Back

A Minor Arc is an arc that measures less than 180 degrees.

Front

What is a Semi-Circle?

Back

A Semi-Circle is an arc that measures exactly 180 degrees, representing half of a circle.

Front

What is the Point of Tangency?

Back

The Point of Tangency is the point where a tangent line touches the circle.

Front

What is a Secant?

Back

A Secant is a line that intersects a circle at two points.

Front

What is the definition of a Circle?

Back

A Circle is a set of points in a plane that are equidistant from a fixed point called the center.

Front

What is the formula for the circumference of a circle?

Back

The circumference of a circle is given by the formula C = 2πr, where r is the radius.

Front

What is the formula for the area of a circle?

Back

The area of a circle is given by the formula A = πr², where r is the radius.

Front

What is the difference between a chord and a diameter?

Back

A chord is a line segment with both endpoints on the circle, while a diameter is a special chord that passes through the center of the circle and is the longest chord.

Front

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

Back

The diameter of a circle is twice the length of the radius (D = 2r).