1. write a two-column proof.
given: triangle acd is isosceles; < 1 is congruent to < 3
prove: segment ab || segment cd

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.

When a 757 passenger jet begins its descent to the ronald reagan national airport in washington, d.c., it is 3900 feet from the ground. its angle of descent is 6 degrees. how far must the plane fly to reach the run way? a. 37,106 ft b. 37,310.4 ft c. 23,456.6 ft d 2,492.7 ft

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.