Down below you have line AB intersecting with line CD. With the angle measure tool find the angle measure of <CEB and <AED. What do you notice? Now find the angle measure of <CEA and <BED.[br][br]Now complete the conjectures down below in your packet.

Create two lines that are parallel. Now create another line that intersects both. Use the [b]intersection tool[/b] to find and label the points of intersection. Now find all the angles that are formed using the [b]angle tool.[/b]