Parts of Circles Chord A segment whose endpoints

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Parts of Circles

Parts of Circles

Chord A segment whose endpoints lie on the circle and does not go through

Chord A segment whose endpoints lie on the circle and does not go through the center of the circle. Y X Chord: XY

Secant A line that intersects a circle at two points. Y Secant: XZ X

Secant A line that intersects a circle at two points. Y Secant: XZ X Z

Tangent A line that intersects a circle at exactly one point. m Y Tangent:

Tangent A line that intersects a circle at exactly one point. m Y Tangent: line m Point of Tangency: X X Z

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

Identify each line or segment that intersects P. chords: QR and ST secant: ST

Identify each line or segment that intersects P. chords: QR and ST secant: ST tangent: UV diameter: ST radii: PQ, PT, and PS

Congruent Circles are congruent if and only if they have congruent radii. 7 7

Congruent Circles are congruent if and only if they have congruent radii. 7 7

Concentric Circles with the same center.

Concentric Circles with the same center.

Tangent Circles Two circles that intersect at exactly one point

Tangent Circles Two circles that intersect at exactly one point

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

A common tangent is a line that is tangent to two circles.

A common tangent is a line that is tangent to two circles.

A common tangent is a line that is tangent to two circles.

A common tangent is a line that is tangent to two circles.

Tangent Lines If a circle has two tangent segments that intersect at the same

Tangent Lines If a circle has two tangent segments that intersect at the same point, then those segments are congruent. A C B AC = BC

HK and HG are tangent to F. Find HG.

HK and HG are tangent to F. Find HG.

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

RS and RT are tangent to Q. Find RS.

RS and RT are tangent to Q. Find RS.

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

TANGENT LINES are PERPENDICULAR to a circle’s RADIUS

HOMEWORK pg. 751 (1 -3, 9 -10, 18 -25)

HOMEWORK pg. 751 (1 -3, 9 -10, 18 -25)

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