Question

http://prntscr.com/6x1jib

Answer 1

a chord is a line joining 2 points on the circle

Answer 2

http://prntscr.com/6x1n9g
now name them

Answer 3

a chord can also be a diameter but not a radius

Answer 4

A and B

Answer 5

yeap
A and B are two chords

keep in mind that, a chord touches the circle on each end
as dan815 pointed out, a radius does not, but a diameter would
as well as other segments that aren't necessarily diameters

Answer 6

Thank you !

Answer 7

yw

Answer 8

it was me :(
jkjk lol