1 Fasteners can hold 2-thick stacks of paperwork securely inside the folder for instant flip-through. 2  Classification folders help you subdivide and identify various sections of your documentation. 3  Dividers are made of 17-pt. 4  kraft for amazing durability.
Complementary angles are two angles with a sum of 90Âº. Supplementary angles are two angles with a sum of 180Âº. Vertical angles are two angles whose sides form two pairs of opposite rays. We can think of these as opposite angles formed by an X. The Lesson:
Two Angles are Supplementary when they add up to 180 degrees. These two angles (140Â° and 40Â°) are Supplementary Angles, because they add up to 180Â°: Notice that together they make a straight angle. But the angles don't have to be together.