2D Shapes Teaching Resources
Bring dimension to 2D shapes for primary students with printable worksheets, digital activities, maths games and more — created by teachers for teachers!
This comprehensive collection of teaching resources includes editable lessons on two-dimensional shapes, aligned to the Australian curriculum and ready to be printed and used in the classroom. Explore the entire collection to find educational games, geometric activities, posters and vocabulary word wall cards to assist your students when they are learning to identify 2D figures by their names and their attributes.
Teaching this part of the maths curriculum for the first time in a while? Read on for a primer from the teachers on the Teach Starter team.
What Are 2D Shapes?
Two-dimensional shapes, or 2D shapes, are shapes that have only length and width, but no depth. Each of these geometric shapes has its own unique characteristics and properties, such as the number of sides, the types of angles and the relationship between the sides and angles.
For example, a square has four equal sides and four right angles, while a circle has no sides and no angles.
Teaching about 2D geometric shapes is crucial in those early years classrooms as these are the building blocks of more complex geometric concepts. Understanding them is an important foundation for developing spatial reasoning skills. It will also lay the groundwork for learning about symmetry, angles and perimeter and area, among other geometry and measurement concepts.
2D Shapes — A Kid-Friendly Definition
Looking to provide a simple definition for your primary students? Here's a kid-friendly definition you can use:
A 2D shape is a flat shape that has only two dimensions — length and width. When something is two-dimensional, it's flat like a drawing or a picture on a piece of paper.
Understanding 2D shapes is important because it helps us recognise and describe the shapes we see around us, and it can also help us with math and other subjects.
2D Shape Examples
A definition is a good start, but providing concrete examples will help students begin to wrap their heads around these two dimensional-objects!
Let's look at some of the common examples of 2D shapes that we teach in the early years:
Square
A square is a 2D shape with four straight sides that are all equal in length and four right angles. It is a type of rectangle and a type of parallelogram.
Rectangle
A rectangle is a 2-dimensional shape that has four straight sides. Unlike a square, a rectangle has two sides that are longer than the other two. It has four right angles and opposite sides that are parallel and equal in length.
Parallelogram
Like a rectangle and square, the parallelogram has four sides and is considered a 2D shape. The four straight sides of a parallelogram are parallel to each other. Opposite sides of a parallelogram are equal in length, and opposite angles are equal in measure. Squares, rectangles and rhombuses are all examples of parallelograms.
Trapezium
A trapezium (or trapezoid) is a quadrilateral shape with two parallel sides and two non-parallel sides. The parallel sides are called the bases of the trapezium, and the non-parallel sides are called the legs. Even though a trapezium has four sides, it is not a parallelogram!
Triangle
A triangle is a two-dimensional shape that has three straight sides and three angles. The angles of a triangle always add up to 180 degrees.
Circle
A circle is a 2D geometric shape that is round and has no straight sides. It is defined as the set of all points in a plane that are at a fixed distance (called the radius) from a single point (called the center).
Ellipse
An ellipse is a 2D shape that is similar to a circle, but its shape is stretched out or elongated. It is defined as the set of all points in a plane whose distances from two fixed points (called the foci) add up to a constant value.
Pentagon
A pentagon is a 2D shape that has five straight sides and five angles. The word 'pentagon' comes from the Greek words 'penta' (meaning 'five') and 'gonia' (meaning 'angle'). Each angle of a regular pentagon measures 108 degrees, and the sum of the angles in a pentagon is 540 degrees.
Hexagon
A hexagon is a 2D shape that has six straight sides and six angles. Each angle of a hexagon measures 120 degrees, and the sum of the angles in a hexagon is 720 degrees. Snowflakes are a common example of hexagons found in nature, and so is the honeycomb!
Rhombus
A rhombus is a 2D shape with four straight sides that are all equal in length. It is a type of parallelogram, and it has opposite angles that are equal in measure.
Octagon
An octagon is an eight-sided 2D shape. A stop sign is an octagon that students might recognise from seeing it along the road on the way to school.
Quadrilateral
A quadrilateral is a 2D shape with four sides and four angles. The sum of the interior angles of a quadrilateral is always 360 degrees. The following are all examples of quadrilaterals:
- Square
- Rectangle
- Parallelogram
- Trapezium
- Rhombus
What Are Polygons?
Many of the 2D shapes that students learn about are polygons.
A polygon is a 2D shape that has three or more straight sides and angles. Polygons can have any number of sides, but they must be straight, and they must not cross each other.
The word 'polygon' comes from the Greek words 'poly' (which means 'many') and 'gonia' (which means 'angle').
Here are some common examples of polygons:
- Triangles
- Squares
- Rectangles
- Pentagons
- Hexagons
- Octagons
A circle and an ellipse are both 2D shapes, but they are not polygons. They have a curved shape, while polygons consist of a closed structure with sides.
- Plus Plan
A World Without Right Angles – Worksheet
Help your students explore the vital role that right angles play in our environment with this differentiated maths worksheet.
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Comparing and Naming Angles – Differentiated Worksheets
Assess your students’ understanding of angle types with the set of differentiated student worksheets.
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Angle Sum of a Quadrilateral – Year 7 Maths Worksheet
Calculate the missing angle in a variety of quadrilaterals with this one-page worksheet.
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2D Symmetry Poster - Reflection and Rotational
This 2D symmetry poster explores both reflection and rotational symmetry.
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Attributes of 2D Shapes Worksheet Set
Share this attributes of 2D shapes worksheet set with your students to help them categorise and analyse two-dimensional shapes.
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Identify and Colour 2D Shapes Worksheet
Use this 2D shapes worksheet to help your students identify 8 of the most common two-dimensional shapes.
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Calculating Missing Angles Interactive Activity
Get your students to find missing angles with this interactive game perfect for Year 6 maths lessons.
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Sorting Symmetrical Shapes Worksheets
Use this simple but effective symmetry worksheet to reinforce the concepts of symmetrical and asymmetrical shapes with your Grade Four students.
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Rotational Symmetry of Shapes Grade 4 Worksheet
Use this two-page rotational symmetry worksheet consolidate student understanding of this geometry (space) concept.
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Tracing and Drawing 2D Shapes Worksheet
A simple trace and draw worksheet for 2D shapes.
- Free Plan
Classifying Angles – Sorting Activity
Help students recognise different types of angles in everyday life with this hands-on sorting activity.
- Free Plan
2D Shapes and 3D Objects Vocabulary Poster
A poster that explains 2D and 3D shapes and lists associated vocabulary.
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Let's Sort It! — 2D Shapes and 3D Objects Sorting Activity for Year 2
Play this sorting game when learning about the properties of 2D shapes and 3D objects.
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Tangram Activity
A poster showing examples of tangram shapes and a tangram template.
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Fire Truck Shape Craft
Use a Fire Truck Shape Craft template to help your students identify 2D shapes during Fire Safety lessons.
- Free Plan
Intersecting, Parallel and Perpendicular Lines Worksheet Set
Use this intersecting, parallel and perpendicular lines worksheet set to introduce your students to basic line concepts.
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Fire Truck Math Worksheets for Kindergarten / Foundation
Build number and 2D shape identification skills with our printable Fire Truck Maths Worksheets.
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Line of Symmetry 2D Shapes Interactive Activity
Engage your students in a variety of interactive activities all focused on the line of symmetry for 2D shapes.
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Science Experiment - Angles of Reflection
A science experiment that explores reflected light.
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Parallel and Perpendicular Lines Quiz
Administer this parallel and perpendicular lines quiz to assess your students’ ability to identify types of line pairs in a variety of settings.
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Drawing Parallel Lines and Perpendicular Lines Worksheet Set
Utilise this drawing parallel lines and perpendicular lines worksheet set to give your students practice drawing line types on their own and on 2D shapes.
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Parallel and Perpendicular Lines in Shapes Sorting Activity
Identify parallel and perpendicular lines in shapes in this engaging sorting activity!
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Identifying Parallel and Perpendicular Lines in Shapes Worksheet Pack
Present this parallel and perpendicular lines in shapes worksheet pack to your students to give them practice identifying attributes of 2D shapes.
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Sorting by Symmetry: 2D Shape Task Cards
Help students practise sorting 2D shapes by the number of lines of symmetry using this fun set of mathematics sorting cards.
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Identifying Lines of Symmetry Worksheets
Use this set of differentiated worksheets to help students practise the process involved with identifying lines of symmetry on two-dimensional shapes.
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Identifying Lines of Symmetry Task Cards
Use this set of 24 task cards to help your students practise identifying lines of symmetry in 2D shapes.
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Line and Rotational Symmetry Teaching Slides
Use this comprehensive deck of 20 teaching slides to introduce your Grade 4 students to line symmetry and rotational symmetry.
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Angles in Our Environment Interactive Game
Bring an extra dimension of fun into your Year 3 maths classroom with an interactive game exploring angles in the environment.
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2D Shapes Comparison Worksheet
A set of two 2D shape worksheets for students to record their observations whilst comparing properties of 2D shapes.
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2D Shapes - Interactive PowerPoint Presentation
An interactive PowerPoint presentation that teaches the features of 2D shapes.
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Shape Seekers PowerPoint
An interactive 162-slide PowerPoint that follows the story of a professor and their new invention that turns 2D shapes into 3D objects.
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Colour by 2D Shape (Basic Shapes)
A set of five colour by shape worksheets.
- 2D Shapes Worksheets
- 2D Shapes Games
- 2D Shapes Posters
- 2D Shapes Teaching Presentations
- 2D Shapes Templates
- 2D Shapes for Preschool/Kindergarten
- 2D Shapes for Foundation Year
- 2D Shapes for Year 1
- 2D Shapes for Year 2
- 2D Shapes for Year 3
- 2D Shapes for Year 4
- 2D Shapes for Year 5
- 2D Shapes for Year 6
- 2D Shapes for Year 7