# Unit Overview: Classifying 2-D shapes

## Lessons:

8 lessons

### 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.

• 1 Quiz
• 13m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Lines of symmetry

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

• 2 Quizzes
• 5m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Classifying triangles

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.

• 2 Quizzes
• 20m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Angles in a triangle

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.

• 2 Quizzes
• 26m Video
• Presentation(PPT)
• Worksheet
• Transcript

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

• 2 Quizzes
• 16m Video
• Presentation(PPT)
• Worksheet
• Transcript

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

• 2 Quizzes
• 19m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Internal angles in a quadrilateral

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.

• 2 Quizzes
• 29m Video
• Presentation(PPT)
• Worksheet
• Transcript