A circle has two non-intersecting chords AB and CD. Chord RS intersects..................what is the length of chord RS?

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A circle has two non-intersecting chords AB and CD. Chord RS intersects chord AB at P and CD at Q. If AP = 12, BP = 20, CQ = 10, DQ = 24, and PQ = 14, what is the length of chord RS?

You are given a circle with diameter AB and a point C. You are to construct a perpendicular CD to the diameter AB using only a straight edge (a ruler without markings).

Lines AB and CD intersect in the interior of a circle, as shown below. If arc AC measures 80 degrees, and arc DB measures 140 degrees, what is the measure of angle DXB?