Geometry Chapter 10: Circles

Front

What is the relationship between an inscribed angle and its intercepted arc?

Back

The inscribed angle equals 1/2 of the intercepted arc.

Front

Are the opposite angles of an inscribed quadrilateral supplementary?

Back

No, the opposite angles of an inscribed quadrilateral are not supplementary.

Front

What is a line that intersects a circle in exactly 1 point called?

Back

A tangent.

Front

What is the standard equation of a circle?

Back

(x-h)² + (y-k)² = r², where (h,k) is the center and r is the radius.

Front

Are tangent segments from a common external point congruent?

Back

Yes, tangent segments from a common external point are congruent.

Front

What is a chord in a circle?

Back

A chord is a line segment whose endpoints lie on the circle.

Front

What is a secant line?

Back

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

Front

What is the diameter of a circle?

Back

The diameter is a chord that passes through the center of the circle.

Front

What is the measure of a central angle in relation to its intercepted arc?

Back

The measure of a central angle is equal to the measure of its intercepted arc.

Front

What is the relationship between the radius and the tangent at the point of tangency?

Back

The radius is perpendicular to the tangent line at the point of tangency.