Clive W. Humphris

**AREA: Parallelogram Area. **

A parallelogram is a four sided polygon whose opposite sides are parallel. Also shown are examples of parallelograms that are known by other names, nevertheless they still have the properties that give them a parallelogram shape.

The length of the perimeter is total length of the sides of the figure. The sides are often named base and slant height. Therefore the perimeter length is equal to the (base length + slant height) × 2.

A parallelogram area can be calculated simply by multiplying the base by the height. Where the height is determined by the angle a. or can be found by applying Pythagorean theorem to the slant height.

The area of the triangles outside the parallelogram can be ignored.

- Table of Contents
- Interactive eTextbooks
- Number Systems
- Number Conversion
- Number Types
- Compound Measures
- Roots
- Angles and Parallels
- Triangle Ratios
- Triangle Angles
- Percentages
- Ratios
- Fractions
- Vectors
- Geometry
- Circle Angles
- Area
- Surface Area and Symmetry
- Volume
- Laws
- Algebra 0
- Algebra 1
- Algebra 2
- Mathematical Rules
- Powers and Indices
- Simplifying
- Linear Equations
- Graphing
- Slope and Translation
- Curves and Angle Conversion
- Personal Finance
- Data Analysis
- Binary Numbers
- Binary Arithmetic