Answer:
Step-by-step explanation:
7) The lengths of the tangent from an external point to a circle are equal.
2x - 1 = x + 10
2x = x + 10 + 1
2x = x + 11
2x -x = 11
[tex]\sf \boxed{\bf x = 11}[/tex]
8) Radius : XC
Chord: CB
Diameter : AB
Name of the circle: X {a circle is named by its center}
