12.2 Surface Areas of Prisms and Cylinders – We understand that cylinders have congruent bases. We applied geometric methods to solve problems. We could design an object or structure to satisfy physical constraints or minimize cost.
12-3 Surface Areas of Pyramids and Cones – We understand the difference between the slant height and height of the pyramid. The slant height is the height of the lateral face, while the height is the altitude of the pyramid. We learned to use trigonometric ratios to find the length of the apothem and the area of the base. We understand that in an oblique cone the axis is not the altitude.