Activity 1: Proof

A busy, two-lane split highway crosses another busy split highway. The northbound lanes are divided from the southbound lanes by a borrow pit. To maintain a direct line of traffic flow, the lines of traffic must be parallel. To verify this, you need to prove that in the following diagram the lines of traffic are parallel.

Given:

\f\fDescribe the angles you would need to know to verify that 30, W, and E are all parallel to each other, and CD, EF, and GH are also parallel. What could be an appropriate measure for ACDE? Be prepared to explain your choice for that angle. Use that measure to nd all other angles involved. I \\x