Refer to the figure and match the theorem that supports the statement

  from top to bottom: 1, 3, 2

Step-by-step explanation:

For chords and arcs, the "theorem that supports the statement" is essentially a restatement of the statement.

For the relationship to chords and diameters, the second statement on the right applies. A chord and the radii to its ends form an isosceles triangle. The altitude is the perpendicular bisector of the chord (triangle base). Of course, it is also a line segment that intersects the center of the circle (the apex of the isosceles triangle).

good luck!

cutie~