measure of arcs equidistant from the and segments center of the circle. 15. Is a diameter? Why or 16. Is a diameter? Why or why not? why not? To be a diameter Determine if a the chord must be a is a perpendicular diameter. bisector of another chord. 17. A chord in a circle is 18 18. The radius of a circle is cm long and is 5 cm from 15 inches. A chord is the center of the circle. drawn 4 inches from the How long is the radius of center of the circle. How Use the the circle? long is the chord? properties of Set up the problem diameters and so that you can use perpendicular Pythagorean chords to find the theorem. radius of a circle. 19. Is 20. Is a tangent? Why or a tangent? Why or why not? why not? Use properties of You must satisfy the tangents to Pythagorean determine if the Theorem. line is a tangent 21. Find the measure of 22. Find the value of x. x. Use properties of tangents to find Pythagorean missing Theorem measures. 23. Find the surface area of 24. What is the diameter of a the sphere. sphere with a surface area of 44 ? Find the surface area of spheres.
measure of arcs and segments equidistant from the center of the circle. Determine if a is a diameter. To be a diameter the chord must be a perpendicular bisector of another chord. 15. Is a diameter? Why or why not? 16. Is a diameter? Why or why not? Use the properties of diameters and perpendicular chords to find the radius of a circle. Set up the problem so that you can use Pythagorean theorem. 17. A chord in a circle is 18 cm long and is 5 cm from the center of the circle. How long is the radius of the circle? 18. The radius of a circle is 15 inches. A chord is drawn 4 inches from the center of the circle. How long is the chord? Use properties of tangents to determine if the line is a tangent You must satisfy the Pythagorean Theorem. 19. Is a tangent? Why or why not? 20. Is a tangent? Why or why not? Use properties of tangents to find missing measures. Pythagorean Theorem 21. Find the measure of x. 22. Find the value of x. Find the surface area of spheres. 23. Find the surface area of the sphere. 24. What is the diameter of a sphere with a surface area of 44 ?
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