12-1 Lines That Intersect Circles 1. Identify each line or segment that intersects OQ.
chords
R
secant:
tangent:
S
diam.:
W
radii:
2. Find the length of each radius. Identify the
point of tangency and write the equation of the
tangent line at this point.
radius of OC:
radius of OD:
D
pt of tangency:
egn. of tangent line:
4

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?