Resumen de Classifying triangles and quadrilaterals

Orlando B. Alonso, Joseph Malkevitch, Ruth Dover (ed. lit.), Patrick Harless (ed. lit.)

• The classification of shapes in middle and high school geometry often seems very mysterious to students, featuring strange terms such as isosceles, trapezoids, and kites, which are defined by a mixture of parallelism and metric ideas. The activities introduce a more natural way to classify triangles and quadrilaterals.