# Ch 18: NES Essential Academic Skills Math: Perimeter & Area

### About This Chapter

## NES Essential Academic Skills Math: Perimeter and Area - Chapter Summary

Complete with examples, this chapter on perimeter and area outlines the characteristics of some geometric shapes and teaches you to calculate missing information. When you watch the video lessons and read the text transcripts, you could be reminded of how to determine the length of the sides of a quadrilateral or measure the sides of a rectangle to calculate its perimeter. This chapter's videos and self-assessment quizzes can help you with:

- Finding the perimeter of polygons and triangles
- Calculating the perimeter of quadrilaterals or irregular and combined shapes
- Measuring the area of parallelograms, rhombuses and trapezoids
- Finding the area of rectangles and triangles

The online video lessons are animated, self-paced and informational. Watch them via your Web-connected device or print out the quiz results for offline study at your convenience. Video tags take you immediately to the lessons' main topics, and you can also pause and rewind the tutorial videos as necessary.

### NES Essential Academic Skills Math: Perimeter and Area Chapter Objectives

The geometry section of the NES Essential Academic Skills Subtest III - Mathematics test will assess your ability to properly analyze and solve problems involving perimeter and area. As you pursue educator certification, recall the subjects that were addressed in this chapter's videos in order to correctly answer some of the 45 multiple-choice questions on the examination. You'll have up to one hour to complete the computer-based assessment. A score report will be sent about two weeks after you've completed the examination.

### 1. Finding the Perimeter of Polygons

Finding the perimeter of polygons means that the distance that is all around the shape has to be found. Study the definition of polygons and the perimeter, and how to use a shortcut to find the perimeter for regular polygons.

### 2. Perimeter of Triangles and Rectangles

Perimeter is defined as the combined distance around a shape, object, or figure, while the perimeter of any polygon can be determined by adding the length of all sides. Learn about perimeter, how to use mathematical formulas to calculate the perimeter of triangles and rectangles, and how to use perimeter to determine the length of unknown polygon sides.

### 3. Perimeter of Quadrilaterals and Irregular or Combined Shapes

The perimeter or measurement of the exterior path of a shape can be calculated even when missing certain information. Learn how to calculate the perimeter of quadrilaterals, irregular shapes, and combined shapes, and explain how to find missing lengths of irregular shapes.

### 4. Measuring the Area of a Parallelogram: Formula & Examples

Measuring the area of a parallelogram involves labelling the base and height measurements and using a formula. Understand the information needed to use the formula, learn why it's important to label measurements, and see the steps to solve for the area through a detailed example.

### 5. Measuring the Area of a Rhombus: Formula & Examples

There are several measurements applied to a rhombus. Learn what a rhombus is and how to measure it using formulas and examples for the altitude and side, side and angle, and diagonals.

### 6. Measuring the Area of a Rectangle: Formula & Examples

From a computer screen to the neighbor's swimming pool to the ice cube tray in the freezer, rectangles abound. Learn to identify a rectangle and how to use a formula to measure its area, including square footage, through a real-world example.

### 7. Measuring the Area of a Trapezoid

In mathematics, a trapezoid is a four-sided figure with two sides that are parallel. Learn how to measure the area of a trapezoid. Review how to identify measurements, and practice using the formula to calculate a trapezoid's area.

### 8. Area of Triangles and Rectangles

The area of a two-dimensional shape represents the space covered within its perimeter, but area calculations change depending on the shape. Learn how to calculate and solve the areas of right triangles, oblique triangles, and rectangles.

### Earning College Credit

Did you know… We have over 220 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

### Other Chapters

Other chapters within the NES Essential Academic Skills Mathematics Subtest 3 (003): Practice & Study Guide course

- About the NES Test
- NES Essential Academic Skills Math: Decimals
- NES Essential Academic Skills Math: Fractions
- NES Essential Academic Skills Math: Estimating & Rounding
- NES Essential Academic Skills Math: Percent Notation
- NES Essential Academic Skills Math: Computing Integers
- NES Essential Academic Skills Math: Rates & Ratios
- Understanding Mathematical Problems
- Types of Numbers & Number Theory
- Basics of Numerical Functions
- NES Essential Academic Skills Math: Linear Equations
- NES Essential Academic Skills Math: Graphing Functions
- NES Essential Academic Skills Math: Quadratic Equations
- NES Essential Academic Skills Math: Inequalities
- Exponentiation & Rational Numbers
- NES Essential Academic Skills Math: Piecewise Functions
- NES Essential Academic Skills Math: Measurement
- NES Essential Academic Skills Math: Geometric Figures
- NES Essential Academic Skills Math: Types of Angles
- NES Essential Academic Skills Math: Triangles
- NES Essential Academic Skills Math: Quadrilaterals
- NES Essential Academic Skills Math: Circles & Arcs
- NES Essential Academic Skills Math: 3D Shapes & Geometric Solids
- Geometric Transformation & Symmetry
- NES Essential Academic Skills Math: Triangle Theorems & Proofs
- NES Essential Academic Skills Math: Similar Polygons
- NES Essential Academic Skills Math: The Pythagorean Theorem
- NES Essential Academic Skills Math: Graphing Coordinates
- NES Essential Academic Skills Math: Trigonometric Functions
- NES Essential Academic Skills Math: Continuity
- Understanding Statistics
- NES Essential Academic Skills Math: Probability
- NES Essential Academic Skills Math: Discrete Math
- NES Essential Academic Skills Mathematics Subtest 3 Flashcards