### Rotational Symmetry

In this lesson, we will learn what rotational symmetry is and also the way to work out the order of rotational symmetry for a given shape.

Skip navigation# Unit Overview: Classifying 2-D shapes

## Lessons:

### Rotational Symmetry

### Lines of symmetry

### Classifying triangles

### Angles in a triangle

### Comparing quadrilaterals

### Diagonals in quadrilaterals

### Internal angles in a quadrilateral

### Tessellating quadrilaterals

8 lessons

In this lesson, we will learn what rotational symmetry is and also the way to work out the order of rotational symmetry for a given shape.

In this lesson, we will learn about lines of symmetry and the way to determine how many lines of symmetry a shape has.

In this lesson, we learn how to describe the properties of scalene, isosceles and equilateral triangles. We will also learn how to identify and classify triangles inscribed in circles.

In this lesson, we will understand that the interior angles in a triangle sum to 180°. We will also solve problems involving unknown angles in triangles.

In this lesson, we will recap our knowledge on quadrilaterals and compare quadrilaterals by comparing symmetry, side length, parallel sides and angles.

In this lesson, we will compare the properties of diagonals in quadrilaterals.

In this lesson, we will be able to use triangles to deduce the sum of the interior angles in a quadrilateral. We will also be able to find unknown angles in quadrilaterals.

In this lesson, we will use the properties of triangles and quadrilaterals to create and describe tessellation patterns.

Units in Maths

- Numbers and numerals
- Axioms and arrays
- Factors and multiples
- Order of operations
- Positive and negative numbers
- Expressions, equations and inequalities
- Angles
- Classifying 2-D shapes
- Constructing triangles and quadrilaterals
- Coordinates
- Area of 2-D shapes
- Transforming 2-D figures
- Prime factor decomposition
- Conceptualising and comparing fractions
- Manipulating and calculating with fractions
- Ratio
- Percentages
- Different number systems
- Sequences
- Forming and solving equations
- Forming and solving inequalities
- Linear graphs
- Accuracy and estimation
- Algebra and problem solving
- Ratio (8.6a)
- Ratio, real life graphs, and rates of change
- Direct and indirect proportion
- Univariate data
- Bivariate data
- Famous maths problems
- Angles and parallel lines
- Angles in polygons
- Bearings
- Volume and surface area of prisms
- Area review
- Circles
- FDP review (9.1a)
- Probability
- Sets and Venn Diagrams
- Solving linear simultaneous equations algebraically
- Solving linear simultaneous equations graphically
- Angle review (9.5a)
- Constructions, congruence, and loci
- Pythagoras's theorem
- Famous maths problems
- Ratio review (9.7a)
- Similarity and enlargement
- Surds and trigonometry
- Quadratic expressions (9.9)
- Quadratic equations (9.10)
- Indices and standard form
- Growth and decay
- Finance

- Ratio review (9.7a)
- Constructing triangles and quadrilaterals
- Angles
- Shape and patterns
- Angles and shape
- Constructions, congruence, and loci
- Faces, shapes and patterns; lines and turns
- 3D Shape
- Coordinates
- Angles
- Classifying 2-D shapes
- Shape and pattern
- Transformations
- Angles in polygons
- Circles
- Pythagoras's theorem
- 2-D Shape and Symmetry
- Transforming 2-D figures
- Bearings
- Area of 2-D shapes
- Missing angles and lengths
- Coordinates and shape
- Shape and sorting
- 2-D and 3-D shape
- Volume and surface area of prisms