About This Chapter
Compass Math: Polygons - Chapter Summary
The lessons in this chapter help you brush up on key definitions and examples of polygons. What you discover will help you answer ACT Compass Math test questions on polygons. Lesson instructors cover the following topics:
- Definitions of polygons, including regular and concave polygons
- Describing convex polygons
- Finding the number of diagonals in a polygon
Our lessons provide a number of approaches to studying polygons for your test. Watch short, engaging video lessons taught by experienced math instructors. Read lesson transcripts and take multiple-choice lesson quizzes to test how well you grasped each concept.
Compass Math: Polygons Chapter Objectives
Colleges use the ACT Compass Math test to evaluate incoming students' strengths and weaknesses so they can be placed into the right math course for them. The test is provided in a computerized format and all questions are multiple choice. There is no time limit imposed, so students may work at their own pace. Questions about polygons are asked on the geometry portion of the ACT Compass Math test. You can watch the video lessons in this chapter anytime, anywhere on your mobile device to study for the test.
1. What Are Polygons? - Definition and Examples
Watch this video lesson to see how the shapes that you grew up with are all related. Learn why the shapes of bricks, stars, and street blocks are considered polygons while the sun, moon, and rolling hills are not.
2. Regular Polygons: Definition & Parts
What makes a polygon a polygon? And what shapes are considered polygons? In this lesson, find out the answers to these questions and more as we learn all about polygons and their parts.
3. Concave Polygon: Definition & Examples
In this lesson, review what polygons are. Then, learn about the angle and resulting qualities that make concave polygons unique. Afterward, you can test your knowledge with a brief quiz.
4. What is a Convex Polygon? - Definition & Examples
In this lesson, you'll learn what polygons are and what makes convex polygons different from concave polygons. Then, you can test your new knowledge with a brief quiz.
5. How to Find the Number of Diagonals in a Polygon
At first, you might think that the diagonals of a polygon are pretty useless, but watch this video lesson to learn how diagonals are used in real life. You will learn the formula to find how many diagonals a polygon has as well as how to use it.
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Other chapters within the ACT Compass Math Test: Practice & Study Guide course
- Compass Math: Integers
- Compass Math: Decimals
- Compass Math: Fractions
- Compass Math: Exponents
- Compass Math: Roots & Radicals
- Compass Math: Percents
- Compass Math: Ratios, Rates & Proportions
- Compass Math: Median, Mean & Mode
- Compass Math: Algebraic Equations & Expressions
- Compass Math: Linear Equations
- Compass Math: Substituting Values
- Compass Math: Monomials & Polynomials
- Compass Math: Factoring Polynomials
- Compass Math: Matrices & Absolute Value
- Compass Math: Inequalities
- Compass Math: Complex Numbers
- Compass Math: Logarithms
- Compass Math: Basic Geometry
- Compass Math: Lines & Angles
- Compass Math: Triangles
- Compass Math: Quadrilaterals
- Compass Math: Circles
- Compass Math: Similar Figures
- Compass Math: Complex Figures
- Compass Math: Constructions
- Compass Math: Area, Circumference & Perimeter
- Compass Math: Mathematical Modeling
- Compass Math: Quadratics
- Compass Math: Quadratic Functions
- Compass Math: Trigonometric Functions
- Compass Math: Rational Functions
- Compass Math: Function Operations
- Compass Math: Trigonometric Identities
- Compass Math: Trigonometric Equations
- Compass Math: Trigonometric Applications
- Compass Math: Trigonometric Graphs
- Compass Math: Graph Symmetry
- Compass Math: Polar Coordinates & Parameterization