Sonoma State University
Berkeley/before Adam
This story was serialized in "Everybody's Magazine" 1906-07. Very unusual story!
Sonoma State University
Sonoma State University: The Copernican Revolution
This site has a time line featuring discoveries, and publications which sprang from Copernicus's publication of De Revolutionibus in 1543, and the people active in the field of physics between 1543 and Newton's death in 1727.
Sonoma State University
Sonoma State University: Angle Bisector
This site offers an explanation with words and pictures on how to bisect an angle using a compass and straightedge.
Sonoma State University
Sonoma State University: Parallel Lines and Similar and Congruent Triangles
This site defines parallel lines, parallel lines cut by a transverse, and congruent triangles. It also contains links for related terms.