Math Open Reference
Math Open Reference: Diagonals of a Square
A complete reference guide to diagonals of a square. It provides definitions, examples, and interactive activities that enhance further explanation. Includes links to related topics.
Other
Louvre Museum: A Closer Look at the Titeux Dancer
Media-rich module examines a terracotta figurine that embodies many characteristics of classical Greek sculpture. Expert commentary accompanied by animated overlays demonstrate details of the composition that give it harmony, balance,...
ArtLex
Art Lex: Line
This online dictionary of art terms from Artlex is a valuable tool. Line is on the Li page. Just scroll down to Line and read a definition with links or look at a sample works of art by Rembrandt or Richard Long. There are quotes by...
Other
Harold Olejarz: Interactive Horizon Line
An interesting interactive slide show about perspective, including the horizon line and vanishing points.
National Council of Teachers of Mathematics
Nctm: Illuminations: Diagonals to Quadrilaterals I
This resource explores the diagonals of quadrilaterals. The interactive tool allows learners to examine intersecting line segments in a variety of ways. Topics discussed are perpendicular diagonals, congruent diagonals, and bisected...
Texas Instruments
Texas Instruments: Intersecting Lines and Planes
In these problems, students are asked to find: point of intersection of two lines; coefficients that make two lines parallel; intersection of diagonals of a quadrilateral; and the point of intersection of three planes.
Other
Relationships: Dynamics
The dynamics of shape in art and the relationship of shape with the other elements of art. The effects of angles and lines on perception.