Circles

The measure of an angle formed by a secant and tangent that intersects on the circle is equal to its intercepted arc.

• TRUE

• FALSE

If a line is tangent to a circle, then it is perpendicular to the radius at its point of tangency.

• TRUE

• FALSE

If two circles are tangent internally, then their lines of centers pass through their point of tangency.

• TRUE

• FALSE

If two tangent segments are drawn on a circle from an external point, then the tangent segments are parallel.

• TRUE

• FALSE

A tangent is a line that touches a circle at exactly two points.

• TRUE

• FALSE

The measure of an angle formed by the intersection of a tangent and a secant on the circle is half the measure of its intercepted arcs.

• TRUE

• FALSE

The measure of an angle formed by the intersection of two tangents on the exterior of the circle is half the sum of the measures of the major and minor arcs.

• TRUE

• FALSE

The measure of an angle formed by the intersection of a secant and a tangent on the exterior of the circle is half the difference of the measures of their intercepted arcs.

• TRUE

• FALSE

The measure of an angle formed by two secants intersecting in the interior of the circle is equal to half the sum of the measures of the arc intercepted by the angle and the angle vertical to it.

• TRUE

• FALSE

The measure of an angle formed by two secants intersecting at the exterior of the circle is equal to half the sum of the two intercepted arcs.

• TRUE

• FALSE