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Basic Geometry

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How to Recognize a Polyhedron

A polyhedron is the three-dimensional equivalent of a polygon, which is a shape that has only straight sides. Similarly, a polyhedron is a solid that has only straight edges and flat faces [more…]

How to Measure in Three Dimensions

Measuring in three dimensions is similar to measuring in two dimensions; however, in 3-D, the boundary of a solid is called its surface area (not its perimeter) [more…]

Compare Numbers Using a Bar Graph

A bar graph gives you an easy way to compare numbers or values. For example, the following figure shows a bar graph comparing the performance of five trainers at a fitness center. [more…]

Use a Pie Chart to Find Percentages and Amounts

A pie chart, which looks like a divided circle, shows you how a whole object is cut up into parts. Pie charts are most often used to represent percentages. For example, the following figure is a pie chart [more…]

Plot Numbers Using a Line Graph

The most common use of a line graph is to plot how numbers change over time. For example, the following figure is a line graph showing last year’s sales figures for Tami’s Interiors. [more…]

Common Area and Perimeter Formulas

You may need to find out the size of an office space, perimeters of buildings, and tracts of land for your business. Keep these frequently used formulas handy for your business math needs: [more…]

Important Angle Measures in Degrees

When you’re figuring out things like lot lines or fencing for your business, you’re working with angles. These figures are the more commonly used angle measures and can help you estimate angles for your [more…]

Formulas for Perimeter, Area, Surface Area, and Volume

You'll find geometric figures showing up frequently in word problems. Geometric figures have names, classifications, and characteristics and are measured in two or more ways. Study this list of the formulas [more…]

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