Tangents Chords and Secants Arc Measures

It is a line that intersects the circle at exactly one point.

• Secant

• Chord

• Sector

• Tangent

Find the measure of the ?

• 40˚

• 110˚

• 122˚

• 84˚

In the same circle, or in congruent circles, two minor arcs are congruent if and if their chords are ________.

•    unequal

•    equal

• congruent

• perpendicular

  It is a segment with endpoints on the circle.

•   Radius

• Diameter

• Chord

• Tangent

What theorem does , If two chords intersect in the interior of a circle, then the products of the measures of the chords are equal.

• Theorem 3.5

• Theorem 3.6

• Theorem 3.7

• Theorem 3.8

The measure of a minor arc is ________.

• 70

• 180

• 360

• less than 180

   It is a line that intersects the circle at exactly two points.

•   Secant

• Chord

• Sector

•   Tangent

The Theorem 3.5 states that _______.

• If a tangent and a secant, two secants, two tangents, or a tangent and a secant is at the exterior of the circle, then the measure of the angle formed is equal to one-half of the absolute value of the difference of the measures of the intercepted arcs.

• In a circle, two chords are congruent if an only if they are equidistant from the center.

•    If a secant and a tangent intersect at the point of tangency, then the measure of an angle formed is half the measure of its intercepted arc.

• If two chords intersect in the interior of a circle, then the products of the measures of the chords are

   It is an angle whose vertex is the center of the circle.

• Sector of a circle

• Arc of a circle

• Central angle

•   Intercepted arc

   It is the region bounded by two radii of the circle and their intercepted arc.

• Sector of a circle

• Arc of a circle

• Central angle

• Intercepted arc