The March 25, 1911 Triangle Shirtwaist Fire was one of the deadliest workplace catastrophes in U.S. history, claiming the lives of 146 workers, most of them women immigrants in their teens and twenties. The fire was so horrific it...

Explore the different types of triangles and other properties.

Article addresses the horror and the legacy of the Triangle Shirtwaist Factory fire while examining the inhuman treatment of immigrants during the late 19th and early 20th Centuries.

Article discusses the impact that the Triangle Company fire had on labor laws and unions.

For as short as this synopsis is, it does give a good overview of the story of the fire and the aftermath. Provides text on resulting labor laws.

A biography of Frances Perkins, Secretary of Labor under Franklin Roosevelt, from the Job Safety and Health Quarterly. A good description of her tireless work in improving working conditions in the United States. (Published Fall 2002)

Let's read about the word of adjacent, look at examples, and learn how angles can be adjacent. Check out the interesting examples to know more about this lesson and try your hand at solving a few interactive questions at the end of the...

This article shows you how to find the tangent angle using Excel. You may be able to accomplish this on a scientific calculator, but if you don't have one handy, Excel can help you make these calculations better than anything else.