- Judah L Schwartz
Four-sided figures are called quadrilaterals. They could also be called quadrangles. Here are some categories; • Quadrilaterals that are equiangular • Quadrilaterals that are NOT equiangular • Quadrangles that are equilateral • Quadrangles that are NOT equilateral Give an example of a four-sided figure that fits in each category. Are there four-sided figures that fit in NO category? Example, or why not? Are there four-sided figures that fit in MORE THAN ONE category? Example, or why not? What questions could / would you ask of your students based on this applet ?