Tangent Lines and Chords of a Circle

Front

A chord that passes through the center of the circle is a ________.

Back

diameter

Front

What is the distance from the center of the circle to any point on the circle called?

Back

radius

Front

If two chords are equidistant from the center of a circle, what can be said about their lengths?

Back

They are congruent to each other.

Front

What is the relationship between a tangent line and a radius drawn to the point of tangency?

Back

They are perpendicular to each other.

Front

If a tangent line touches a circle at point A and a chord AB is drawn from point A, what can be said about the angles formed?

Back

The angle between the tangent and the chord is equal to the angle in the alternate segment.

Front

What is the formula for the circumference of a circle?

Back

C = 2πr, where r is the radius.

Front

What is the area of a circle?

Back

A = πr², where r is the radius.

Front

If a circle has a radius of 3, what is its diameter?

Back

6

Front

What is the relationship between the lengths of two chords that are equidistant from the center of a circle?

Back

They are equal in length.

Front

If a circle has a diameter of 10, what is its radius?

Back

5