# Ch 41: NES Middle Grades Math: Angles

### About This Chapter

## NES Middle Grades Math: Angles - Chapter Summary

Though relatively brief, this chapter provides a solid foundation of angle types and definitions before we explore deeper geometric concepts. The lessons include real-world examples and visual aids to set the concepts solidly in your memory before you take the National Evaluation Series (NES) Middle Grades Mathematics test. These lessons provide information about:

- Acute angles
- Obtuse angles
- Right angles

Like all of our lessons, these are built around a short video instruction provided by our expert instructors accompanied by printable materials and self-assessments. It is easy to navigate the course content using the lesson sidebar and content tags. Focus your studies on your individual trouble areas by returning to content you struggle with on the chapter test.

### NES Middle Grades Math: Angles Objectives

Angles are addressed in the Measurement and Geometry content domain of the NES Middle Grades Mathematics exam. This domain accounts for 25% of the test content and includes objective 0008, Euclidean geometry, where most of the angle-related questions will fall. The test has 150 multiple-choice questions overall and a 4-hour, 15-minute time limit to complete them. Scores are calculated along a 100-300 scale, with 220 being the minimum passing score. They will let you know whether you passed before you leave the testing center, but your detailed score report will take a couple of weeks to be published.

You can check out the NES website for more on the test breakdown and to register for the test. Be sure to review your specific state's licensure and test registration procedures to make sure you are taking the proper test and registering in the appropriate place.

### 1. What is an Acute Angle? - Definition, Description & Examples

An acute angle is an angle that is smaller than a right angle. Explore acute angles through a description and see examples both from graphs and real life.

### 2. What is an Obtuse Angle? - Definition & Examples

An obtuse angle is an angle that has a measure of more than 90 degrees. Learn about the definition and examples of obtuse angles, and explore right angles and straight angles.

### 3. What is a Right Angle? - Definition & Formula

Right angles are all angles that are exactly 90 degrees and the most obvious in geometry is the triangle. Learn the definition of a right angle and explore the and notation and formula for right angles using the Pythagorean theorem, which relates all sides of a triangle to one another.

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### Other Chapters

Other chapters within the NES Middle Grades Mathematics (203): Practice & Study Guide course

- About the NES Test
- NES Middle Grades Math: Basic Arithmetic Operations
- NES Middle Grades Math: Solving Word Problems
- NES Middle Grades Math: Money & Consumer Math
- NES Middle Grades Math: Properties of Numbers
- NES Middle Grades Math: Estimating & Rounding
- NES Middle Grades Math: Number Theory
- NES Middle Grades Math: Roots & Radical Expressions
- NES Middle Grades Math: Exponents & Exponential Expressions
- NES Middle Grades Math: Simplifying Expressions
- NES Middle Grades Math: Integers
- NES Middle Grades Math: Rational Numbers
- NES Middle Grades Math: Introduction to Fractions
- NES Middle Grades Math: Operations with Fractions
- NES Middle Grades Math: Introduction to Decimals
- NES Middle Grades Math: Operations with Decimals
- NES Middle Grades Math: Percents
- NES Middle Grades Math: Number Patterns & Sequences
- NES Middle Grades Math: Properties of Functions
- NES Middle Grades Math: Graphing Functions
- NES Middle Grades Math: Negative Numbers
- NES Middle Grades Math: Absolute Value
- NES Middle Grades Math: Inequalities
- NES Middle Grades Math: Factoring
- NES Middle Grades Math: Monomials & Polynomials
- NES Middle Grades Math: Writing Algebraic Expressions
- NES Middle Grades Math: Basic Algebraic Expressions
- NES Middle Grades Math: Algebraic Distribution
- NES Middle Grades Math: One-Step Equations
- NES Middle Grades Math: Two-Step Equations
- NES Middle Grades Math: Rational Expressions
- NES Middle Grades Math: The Coordinate Graph
- NES Middle Grades Math: Linear Equations
- NES Middle Grades Math: Systems of Linear Equations
- NES Middle Grades Math: Rates, Ratios & Proportions
- NES Middle Grades Math: Measurement
- NES Middle Grades Math: Perimeter & Area
- NES Middle Grades Math: Polyhedrons & Geometric Solids
- NES Middle Grades Math: Symmetry, Similarity & Congruence
- NES Middle Grades Math: Properties of Lines
- NES Middle Grades Math: Triangles
- NES Middle Grades Math: Triangle Theorems & Proofs
- NES Middle Grades Math: Similar Polygons
- NES Middle Grades Math: The Pythagorean Theorem
- NES Middle Grades Math: Quadrilaterals
- NES Middle Grades Math: Circles
- NES Middle Grades Math: Circular Arcs & Measurement
- NES Middle Grades Math: Transformations
- NES Middle Grades Math: Data & Graphs
- Reasoning & Data Analysis
- NES Middle Grades Math: Statistics
- NES Middle Grades Math: Data Collection
- NES Middle Grades Math: Samples & Populations
- NES Middle Grades Math: Probability
- NES Middle Grades Math: Sets
- NES Middle Grades Mathematics Flashcards