Surface Area and Volume (with a little Area)

A geometry net is a 2-dimensional shape that can be folded to form a 3-dimensional shape or a solid. Or a net is a pattern made when the surface of a three-dimensional figure is laid out flat showing each face of the figure. A solid may have different nets.

A cross section is a figure you get when cutting a solid. For example, depending on how you cut the cone to the right, you can get a circle, ellipse, parabola, or hyperbola.

There are actually three formulas you can use for finding the area of a rhombus, but this is the one we will use the most often. We also use this formula for finding the area of kites.

Answers at the end.

Answers at the end.

n = number of sides

b = base of triangle (side length)

h = height of triangle

*Careful* Answers at the end.

Answers at the end.

Answers on last slide.

Answers on last slide

Answers on last slide

Answers on last slide

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