These 5 amazing geometry flip books for 3rd-grade are the perfect reference tools for your students!

The flip books are easy to use and make it simple for a 3rd-grader to understand!

Use the flip books at math centers and in interactive notebooks!

Flip books include:

- Quadrilaterals
- Polygons
- Right, Acute, Obtuse, Rays, and Angles
- Right, Acute, Obtuse Triangles
- Equilateral, Isosceles, Scalene Triangles
- Point, Lines, Line Segments, Intersecting Lines, and Parallel Lines

## Quadrilaterals

What are **quadrilaterals**? **Quadrilaterals** are special kinds of shapes with four sides.

**Quadrilaterals** have different angles and sides. Some shapes have straight sides and right angles, like rectangles, while others have slanted sides and no right angles, like rhombuses.

It's really fun to learn about these shapes and see how they are similar and different.

So, what does the quadrilateral flip book cover? The quadrilateral flip book covers trapezoids, parallelograms, rectangles, rhombuses, and squares.

Each page of the flip book covers one quadrilateral and shares that shapes attributes.

Included with the flip book is a blank set so you can add fun things to it, such as how a rhombus can be a parallelogram, but its sides are all the same length, just like a square.

## Polygons

What is a **polygon**? A polygon is a geometric shape defined by a closed figure with straight sides.

They are characterized by having three or more vertices connected by straight line segments to form a closed shape.

Polygons can vary in the number of sides they possess, with triangles, quadrilaterals, pentagons, hexagons, and so on.

The angles between the sides of a polygon can vary depending on the number of sides it has.

This polygon flip book covers triangles, squares, octagons, pentagons, and quadrilaterals.

## Rays and Angles

What are **angles**? Angles are special measurements that tell us how much something turns or bends.

Angles come in different types and sizes. Some angles are like straight lines and don't bend at all, like rays.

Other angles make sharp turns and form a perfect square corner, like right angles.

There are also angles that are smaller than right angles, called acute angles, and angles that are larger and more open than right angles, called obtuse angles.

What are **rays**? A ray is part of a line that starts from a single point, called the endpoint, and extends infinitely in one direction.

A ray has no definite endpoint in that direction, continuing indefinitely.

So, what does the flip book cover? The angle explorer covers rays, right angles, acute angles, and obtuse angles.

Each section of the flip book focuses on one type of angle and explains its unique characteristics and uses.

Included with the flip book is a blank section where you can add your own definition, such as how a right angle can be found in the corners of a square, or how an obtuse angle can be seen when you open your arms really wide.

## Equilateral, Isosceles, Scalene Triangles

What are **triangles**? Triangles are special shapes with three sides.

Triangles come in different types and sizes. Some triangles have three sides that are all the same length, like equilateral triangles.

Other triangles have sides of different lengths, like scalene triangles. There are also triangles that have two sides of equal length, called isosceles triangles.

So, what does the triangle flip book cover? The triangle flip book covers equilateral triangles, scalene triangles, and isosceles triangles.

Each part of the flip book focuses on one type of triangle and explores its unique properties and characteristics.

Included with the flip book is a blank version where you can add your own findings, such as how all angles in an equilateral triangle are equal, or how an isosceles triangle has two sides that are the same length and two angles that are the same size.

## Points, Lines, and Line Segments

What are points, lines, line segments, intersecting lines, and parallel lines?

First, we have **points**. Points are like tiny dots and have no size. They help us identify specific locations.

Next, we have **lines**. Lines stretch forever in both directions and have no endpoints. They are straight and go on infinitely.**Line segments** are shorter sections of lines. They have two endpoints and a specific length. They connect two points.

When lines cross each other, we call them **intersecting lines**. These lines meet at a single point.

Now, **parallel lines** are lines that go in the same direction and never meet, no matter how far they stretch. They always remain the same distance apart.

Understanding these elements is important because they help us describe and analyze shapes and patterns in our world.

## Right, Acute, Obtuse Triangles

What are triangles? Triangles are special shapes with three sides.

Triangles come in different types and sizes, depending on their angles. Some triangles have one angle that forms a perfect square corner, called a right triangle. Other triangles have all angles that are smaller than a right angle, known as acute triangles. There are also triangles that have one angle larger than a right angle, known as an obtuse triangle.

It's really fascinating to explore these different types of triangles and understand how their angles affect their shapes.

So, what does the triangle flip book cover? The triangle flip book covers right triangles, acute triangles, and obtuse triangles.

Each part of the flip book focuses on one type of triangle and explains its unique angle properties and characteristics.

Included in the journey is a blank version where you can add your own observations, such as how the sides of a right triangle relate to its angles, or how an acute triangle has all its angles less than 90 degrees.

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