The reasoning that the depression angle at $B$ equals $\angle ACB$ at $C$ uses the fact that the two horizontal lines at

Question

The reasoning that the depression angle at $B$ equals $\angle ACB$ at $C$ uses the fact that the two horizontal lines at $B$ and at $C$ are—

Accepted Answer

parallel

Answer

perpendicular

Answer

intersecting

Answer

coincident

The reasoning that the depression angle at BBB equals ∠ACB\angle ACB∠ACB at CCC uses the fact that the two horizontal lines at BBB and at CCC are—