8 6 Segments in Circles Interior Segments l
- Slides: 12
8 -6 Segments in Circles
Interior Segments l. Interior segments are formed by two intersecting chords. A D E B C
Interior Segments Theorem l If two chords intersect within a circle, then the product of the lengths of the parts of one chord is equal to the product of the lengths of the parts of the second chord.
Interior Segments Theorem l If two chords intersect within a circle, then the product of the lengths of the parts of one chord is equal to the product of the lengths of the parts of the second chord. A D a c C d E a • b = c • d b B
Exterior Segments l Exterior segments are formed by two secants, or a secant and a tangent, or two tangents.
Secant Segments Theorem l If two secant segments are drawn to a circle from an external point, then the products of the lengths of the secant and their exterior parts are equal. s s • e = r • c e c r secant • exterior = secant • exterior or whole • outside = whole • outside wo = wo
Secant Segments Theorem s • e = r • c secant • exterior = secant • exterior or whole • outside = whole • outside wo = wo
EXAMPLE: x FIND x
Secant and Tangent Theorem: l The square of the length of the tangent equals the product of the length of the secant and its exterior segment. s • e = t 2 t e s
Secant and Tangent Theorem: s • e = t 2
EXAMPLE: x FIND x
Review: Tangent Theorem l. If two segments from the same exterior point are tangent to a circle, then they are congruent. tan gen t g n ta t n e
- Central angle
- Exterior angles of circles
- Module 15 angles and segments in circles
- 15-4 segment relationships in circles
- Special segments in circles
- Identify the special segment that's pictured
- Unit 10 circles homework 7 segments lengths
- Chord chord theorem
- Paseo circles of identity
- 11-3 skills practice areas of circles and sectors
- Lines that intersect circles
- 11-1 geometry lesson quiz
- Solution circles