Circles – Segment Formulas

G.11 Circles – Segment Formulas

Circles – Segment Formulas

Tangents to a circle from the _____ ________ are _______. If 2 chords are equidistant to the center, then: the ______ are = the _____ are ≅ the ______ is _________

____ x ____ = ____ x ____

__ (__ + __) = __ (__ + __) or ____ (______) = ____ (______)

__2 = __ (__ + __) or ____ (______) = ____ (______)

Circles – Segment Formulas

Tangents to a circle from the same point are equal. If 2 chords are equidistant to the center, then: the chords are = the arcs are ≅ the chord is bisected. a d c

b

axb=cxd

b

d

a c

a c

b

a (a + b) = c (c + d) or ext. (whole) = ext. (whole)

a2 = b (b + c) or ext. (whole) = ext. (whole)