# Ch 3: Shapes in Geometry for Elementary School

### About This Chapter

## Shapes in Geometry for Elementary School - Chapter Summary

This chapter offers the comprehensive overview you need to help your student gain full comprehension of shapes in geometry. Lessons cover definitions and examples of shapes that include the hexahedron, oval, parallelogram and rhombus. Your student can also learn steps involved in finding the center of rotation, volume and surface area of a hemisphere, surface area and volume of an octahedron and much more. With each lesson is a short quiz you can use to assess your student's comprehension of shapes in geometry. A chapter exam is also available to reinforce lesson concepts.

## Who It's For

Kids who need extra help with shapes in geometry will benefit from the lessons in this chapter. There's no faster or easier way to learn about shapes in geometry.

- Students who have fallen behind in understanding geometric shapes, their properties and formulas
- Students with learning disabilities or need a little extra help learning about shapes in geometry
- Students who prefer multiple ways of learning math (visual or auditory)
- Students who have missed class and need to catch up
- Students who need an efficient and convenient way to learn about shapes in geometry
- Students who struggle to understand their math teachers
- Students who attend schools without extra math resources

## How It Works

- Find lessons in the chapter that cover shapes in geometry topics your student needs to learn or review.
- Review the lesson with your student or read through the text lesson.
- Refer to the highlighted vocab words to reinforce learning about shapes in geometry.
- Test your student's understanding of each lesson with short quizzes.
- Verify your student understands shapes in geometry by completing the Shapes in Geometry for Elementary School chapter exam.

### 1. What is an Annulus in Math? - Definition & Formula

Have you ever heard of an annulus? If you have ever eaten a doughnut, you have seen an annulus! In this lesson, we will learn the definition and discover how to find the area of an annulus!

### 2. What is an Apex in Math?

The Great Pyramids. A party hat. The eyes of a jack-o-lantern. What do all these have in common? They all have an apex! Let's learn how to find the apex of a shape and what shapes can have an apex.

### 3. What is Asymmetry in Math? - Definition & Examples

Asymmetry is all around us and can be found in math, too! In this lesson, you will learn what it means to have symmetry as well as the definition of asymmetry and how to recognize whether an image is asymmetrical or not.

### 4. What is the Center of Rotation?

The center of rotation comes in handy if you like to draw - especially if you like to draw things that go in circles! In fact, anything can be the center of rotation on a picture or a three dimensional object.

### 5. How to Find the Center of Rotation

If you've ever been on a Ferris wheel or twirled a baton, you have found the center of rotation, or the point around which something rotates. In this lesson, you'll learn how to find the center of rotation for an object that has been turned.

### 6. What is a Closed Curve?

Think you can figure out what a closed curve is just by looking at its name? You might be surprised! In this lesson, we will look at the two types of closed curves, simple and not simple, and learn exactly what shapes are considered closed curves.

### 7. Cones Lesson for Kids: Definition & Properties

This lesson introduces you to a type of 3-dimensional figure: the cone. We'll learn to identify cones in everyday life, and we'll explore the specific attributes that make cones unique from other 3-dimensional shapes.

### 8. Cylinder Lesson for Kids: Definition & Facts

A pop can, a container of Pringles, and a can of delicious soup all have something in common! They are all in the shape of a cylinder! We will learn all about these shapes in this lesson.

### 9. Ellipse Definition: Lesson for Kids

In this lesson we'll look at the definition of an ellipse. We'll also look at the mathematical characteristics of an ellipse. At the end of this lesson, you'll find an activity to help you create your own ellipse.

### 10. What is a Frequency Polygon? - Definition & Examples

In this lesson, we will discover what a frequency polygon is, what it looks like, and what it can be used for. We will also discuss the elements that every frequency polygon must have.

### 11. Volume of a Hemisphere

In this lesson, we will explore the characteristics of a hemisphere and define what volume is. We will also learn the formula to calculate the volume of a hemisphere and try some practice problems.

### 12. What is a Hemisphere in Math? - Definition & Example

A hemisphere is a shape that you'll need to know in your mathematics classes. In this lesson, you'll learn what a hemisphere is and look at some real-world examples of this three-dimensional shape.

### 13. Surface Area of a Hemisphere

In this lesson, we will discuss the elements of a hemisphere and define surface area. We will also learn the formula to calculate the surface area of a hemisphere and how to apply it.

### 14. What is a Hexahedron?

Do you know what a hexahedron is? Well, you're about to find out! Keep on reading to find out what a hexahedron is, as well as see pictures of some of the different types.

### 15. What is an Icosahedron? - Definition & Facts

In this lesson, you will learn what an icosahedron is and explore the properties of this shape. You can even create your own icosahedron using things around your home. Now, let's go have some fun and learn all about icosahedrons!

### 16. Major & Minor Arcs of a Circle

When people draw pictures, they use all different shapes and designs. Some people may use squares, triangles or circles. However some people use arcs. In this lesson, you will learn about the two types of arcs - major and minor.

### 17. Surface Area & Volume of an Octahedron

If you had an octahedron and needed to find the surface area or the volume of said octahedron, there are formulas to help you. It isn't hard at all if you just follow the directions.

### 18. What is the Order of Rotational Symmetry?

Symmetry can be found in nature, buildings, art, and even in people! In this lesson, you will learn about the order of rotational symmetry: how to determine it and how to recognize rotational symmetry when you see it.

### 19. What is an Oval? - Definition & Shapes

In this lesson, you will learn what an oval is, the properties of an oval, and the many things around you in the shape of an oval. Now, let's go have some fun and learn all about an oval!

### 20. Parallelogram Lesson for Kids

What do you know about parallelograms? You may have seen one or more today and not even known it! In this lesson, you will learn about parallelograms, their features, how to recognize one, and where to spot one in your world.

### 21. What are Plane Shapes? - Definition & Examples

Stop signs, Dorito's, a sheet of paper, and a paper plate. What do all of these have in common? They are examples of plane shapes, and in this lesson, you'll learn how to find plane shapes everywhere!

### 22. Plane Shapes: Types & Properties

Plane shapes are all around us, but how do we know what shapes are plane shapes? In this lesson, you will learn what plane shapes are and explore their different types and properties.

### 23. What is a Quadrangle? - Definition & Shapes

Did you know that a square can also be classified as a rectangle, and even a quadrangle? What is a quadrangle? You will find out in this fascinating lesson!

### 24. Quadrilateral Lesson for Kids: Definition & Shapes

You've learned about different types of shapes, but do you know about quadrilaterals? In this lesson, explore the definition of a quadrilateral and find out about many familiar and new types of quadrilaterals!

### 25. Rhombus Lesson for Kids: Definition & Facts

This lesson will teach you all the attributes you need to have a rhombus. Examine how to find the perimeter and area, as well as discover some interesting things about rhombuses.

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### Other Chapters

Other chapters within the Geometry for Kids course