# Ch 21: 3rd Grade Math: Quadrilaterals

### About This Chapter

## Quadrilaterals - Chapter Summary

Students can learn about topics such as the properties of a parallelogram and a rhombus through the video lessons of this Quadrilaterals chapter. Teachers also explain the likenesses and contrasts between quadrilaterals. The chapter includes an examination that tests students' knowledge. Questions about the material can be submitted to instructors.

## Chapter Lessons and Objectives

Lesson | Objective |
---|---|

Quadrilaterals: Definition and Properties | Students learn to recognize quadrilaterals. |

Parallelograms: Definition, Properties and Proof Theorems | Instructors explain how a quadrilateral is a parallelogram. |

What is a Rhombus? - Definition and Properties | Students learn to identify and Illustrate a rhombus. |

Kites in Geometry: Definition and Properties | Instructors explain the properties of a kite. |

Rectangles: Definition, Properties and Construction | Students are taught to construct triangles. |

Squares: Definition and Properties | Instructors explain the properties of squares. |

Trapezoids: Definition and Properties | Students learn how to identify an isosceles trapezoid. |

Similarities and Differences of Quadrilaterals | Instructors provide 3rd grade students with chances to practice what they've learned about the similarities and distinctions between quadrilaterals. |

### 1. What is a Quadrilateral? - Definition, Properties, Types & Examples

This lesson explains the definition and properties of a quadrilateral. We will look at examples of two categories of quadrilaterals. At the end, you will be able to test your knowledge with a quiz.

### 2. Parallelograms: Definition, Properties, and Proof Theorems

Watch this video lesson to learn how you can identify parallelograms. You will see the unique properties that belong to the parallelogram. You will see the special side and angle characteristics needed to prove a certain shape is a parallelogram.

### 3. What Is a Rhombus? - Definition and Properties

Watch this video lesson to learn why rhombuses are a special type of quadrilateral. Also, learn why a rhombus is also a parallelogram. Watch as we explore the sides and angles of a rhombus.

### 4. Kites in Geometry: Definition and Properties

A kite in geometry looks a lot like a kite in the sky! Watch this video lesson to see for yourself. Also, learn about the side and angle properties of kites that make them unique.

### 5. Rectangles: Definition, Properties & Construction

Watch this video lesson to learn a bit about rectangles. Learn why rectangles are the building blocks of many homes. Also, learn about the properties that make a rectangle unique from other shapes. Finally, learn how you can draw one.

### 6. Squares: Definition and Properties

Squares can be found in many places in the real world. Watch this video lesson to see how useful they can be and also to learn how to find the perimeter and area of a square.

### 7. Trapezoids: Definition and Properties

Watch this video lesson to learn what a trapezoid has to do with a triangle. Also, learn the special words that describe the various parts of a trapezoid. You will also see special types of trapezoids.

### 8. Similarities & Differences of Quadrilaterals

Watch this video lesson to learn how you can find similarities and differences between two quadrilaterals. Learn what aspects of the quadrilaterals you need to focus on to find the similarities and differences.

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### Other Chapters

Other chapters within the 3rd Grade Math: Practice & Review course

- 3rd Grade Math: Number Sense & Arithmetic
- 3rd Grade Math: Number Properties
- 3rd Grade Math: Solving Math Word Problems
- 3rd Grade Math: Estimation & Rounding
- 3rd Grade Math: Addition
- 3rd Grade Math: Subtraction
- 3rd Grade Math: Multiplication
- 3rd Grade Math: Multiples of Whole Numbers
- 3rd Grade Math: Multiplication Skills Practice
- 3rd Grade Math: Division
- 3rd Grade Math: Division Skills Practice
- 3rd Grade Math: Simplifying Whole Number Expressions
- 3rd Grade Math: Basic Algebraic Expressions
- 3rd Grade Math: Writing Algebraic Expressions
- 3rd Grade Math: Data & Graphs
- 3rd Grade Math: Probability & Statistics
- 3rd Grade Math: Units of Measurement
- 3rd Grade Math: Introduction to Geometric Figures
- 3rd Grade Math: Angles
- 3rd Grade Math: Triangles
- 3rd Grade Math: Perimeter, Area & Volume
- 3rd Grade Math: Symmetry, Similarity & Congruence
- 3rd Grade Math: Fractions
- 3rd Grade Math: Decimals
- 3rd Grade Math: Money
- 3rd Grade Math: Time