B. Determine whether each statement is TRUE or FALSE.
13. All radii of a circle are equal.
14. A tangent contains the center of the circle.
15. Two radii of a circle always form a diameter of the
circle.
16. Two points on the circle determine a radius.
17. A diameter of a circle is the longest chord of the
circle.
18. Al diameters of a circle are equal.
19. A tangent and a radius of a circle are always
perpendicular to each other.
20. A radius of a circle is tangent to the circle.​