If and are tangent to circle D, what can we say about the picture

1
(No Transcript)
2
If and are tangent to circle D,
what can we say about the picture?
3
What has to be true in order for arc AC to be
congruent to arc DF?
4
If one chord is a perpendicular bisector of
another, the first chord is a diameter. What can
we say about arc GF and arc FH?
5
Knowing that chords and are
equidistant from the center, what two conclusions
can be made about the picture?
6
What can we say about and
? Why?
7
Given diameter , what is the measure of
?
8
Given the inscribed quadrilateral PQRS, what can
we say about the angles inside the quadrilateral?