Units, perimeter, and circumference and Area
When it comes to measuring flat shapes, geometry generously provides a formula for every occasion. This program begins with an overview of how to convert English and metric units of measurement. Next, finding the perimeter of polygons is illustrated, after which a tour of Circleville provides a snapshot summary of circumference and pi. Finally, the Area Congruence and Area Addition Postulates are revealed, along with formulas for the area of squares, rectangles, parallelograms, triangles, trapezoids, and circles. (20 minutes)