Segments in Circles

1
Segments in Circles

• Whats left?

2
Harpsichord or parts of chords
B
BFFE CFFD
A
F
D
C
E

• If two chords intersect, then the products of the
  parts are equal!

3
Secant Segments

• External Secant Segments BC
• Internal Secant Segments CD

D
C
A
B
4
Secants continued
D
C
BCBD BEBF
B
E
A
F

• If two secant segments are drawn from the same
  exterior point, then the products of the external
  secant segments and the secant segments are equal.

5
Tangents and secants
C
B
BC2 BDBE
A
D
D
E
E

• If a tangent and secant segment are drawn from
  the same exterior point, then the square of the
  tangent segment equals the product of the
  exterior secant segment and the secant segment
  itself.

6
Practice in class

• P. 494 6--12

7
Practice at home

• P. 495496 14-27, 29-32, 37