Embed Size (px)
Citation preview
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
4.1b: Chords
G-C.2 Identify and describe relationships among inscribed angles, radii, and chords. Include the relationship between central, inscribed, and circumscribed angles; inscribed angles on a diameter are right angles; the radius of a circle is perpendicular to the tangent where the radius intersects the circle.
CCSS
GSE
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
A chord is a segment that joins two points of the circle.
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
12
3
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
How could we prove this is true?
Is there any way to draw 2 parallel lines within a circle and this not be true?
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
Ex1. Find the length of a chord that is 8 inches from the center ofa circle with a radius of 12 inches.
Ex2. A chord is 15 inches long in a circle with a diameter of 20 inches. Find the distance from the center of the circle to the chord.
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
http://www.regentsprep.org/Regents/math/geometry/GP14/
CircleChords.htm
Done
