Chapter 10 Concepts- section by section 10.1 Area of a triangle, rectangle or parallelogram. (base & corresponding altitude) 10.2 Area of Trapezoids, Rhombuses and Kites. (which one is NOT on reference sheet?) 10.3 Area of Regular Polygons. (radius vs. apothem. Use 30-60-90, 45-45-90 for lengths) 10.4 Perimeters and Areas of Similar Figures. (scale factor, ratio of perimeter, ratio of area) 10.5 Trigonometry and Area. (radius, apothem and trig functions for lengths, area using SAS) 10.6 Circles and Arcs. (arc measure vs. arc length) 10.7 Areas of Circles and Sectors. (area of a circle, sector and segment)