CK-12 Geometry - Second Edition

http://www.ck12.org Chapter 9. Circles a. Is 4 AEC∼4BED? Why? b. FindBC. c. FindAD. d. Using the trigonometric ratios, findm^6 C ...

9.1. Parts of Circles & Tangent Lines http://www.ck12.org Circles tangent atTare centered atMandN.STis tangent to both circ ...

http://www.ck12.org Chapter 9. Circles 9.2 Properties of Arcs Learning Objectives Define and measure central angles in circles. ...

9.2. Properties of Arcs http://www.ck12.org If the radius of this Ferris wheel is 25 ft., how far apart are two adjacent seats? ...

http://www.ck12.org Chapter 9. Circles Minor Arc:An arc that is less than 180◦. Major Arc:An arc that is greater than 180◦.Alway ...

9.2. Properties of Arcs http://www.ck12.org Solution:From the picture, we see that^6 ACDand^6 ECBare vertical angles.^6 DCBand^6 ...

http://www.ck12.org Chapter 9. Circles a)mF ED̂ b)mCDF̂ c)mBD̂ d)mDFĈ Solution:Use the Arc Addition Postulate. a)mF ED̂=mF Ê+m ...

9.2. Properties of Arcs http://www.ck12.org sin 10◦= x 25 x=25 sin 10◦= 4. 3 f t. The total distance apart is 8.6 feet. Review Q ...

http://www.ck12.org Chapter 9. Circles 11. 12. Find the measure of the indicated arcs or central angles in ⊙ A.DGis a diameter. ...

9.2. Properties of Arcs http://www.ck12.org 22. 23. What can you conclude about ⊙ Aand ⊙ B? Use the diagram below to find the ...

http://www.ck12.org Chapter 9. Circles 31.m^6 V U Z 32.m^6 Y U Z 33.m^6 WUV 34.m^6 XUV 35.mY W Ẑ 36.mWY Ẑ Review Queue Answers ...

9.3. Properties of Chords http://www.ck12.org 9.3 Properties of Chords Learning Objectives Find the lengths of chords in a circ ...

http://www.ck12.org Chapter 9. Circles Recall from the first section, that a chord is a line segment whose endpoints are on a ci ...

9.3. Properties of Chords http://www.ck12.org b) IfmBĈ= 80 ◦, findmCD̂. Solution: a) From the picture, we knowBD=CD. Because th ...

http://www.ck12.org Chapter 9. Circles In the picture to the left,AD⊥BCandBD∼=DC. From this theorem, we also notice thatADalso b ...

9.3. Properties of Chords http://www.ck12.org Equidistant Congruent Chords Investigation 9-3: Properties of Congruent Chords Too ...

http://www.ck12.org Chapter 9. Circles Solution:Because the distance from the center to the chords is congruent and perpendicula ...

9.3. Properties of Chords http://www.ck12.org Review Questions Two chords in a circle are perpendicular and congruent. Does one ...

http://www.ck12.org Chapter 9. Circles 12.mBD̂ 13.mBD̂ 14.mBD̂ Algebra ConnectionFind the value ofxand/ory. 15. 16. ...

9.3. Properties of Chords http://www.ck12.org 17. 18.AB= 32 19. 20. 21. 22. ...