Quadrilaterals & Other Polygons
Students have studied special quadrilaterals in middle school and should be familiar with their definitions and some of their properties. Special quadrilaterals include parallelograms, rectangles, rhombuses, squares, trapezoids, isosceles trapezoids, and kites.
In this chapter we will be able to investigate the properties of special quadrilaterals by using dynamic geometry software. The properties are then proven using a variety of proof formats. The reasoning learned in Chapter 5 (proving triangles congruent given different hypotheses) is applied to proofs involving quadrilaterals in this chapter.