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# Unit Overview: Revise - Angles, Polygons, Bearings

## Lessons:

12 lessons

### Find missing angles around a point and on a straight line

In this lesson, we will calculate the missing angles around a point and on a straight line. We will revisit the properties of angles on a straight line and a point, and use this information to help us deduce the value of missing angles in problems.

• 1 Quiz
• 10m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Find missing angles in a triangle

In this lesson, we will calculate the missing angles in a triangle. We will revisit the properties of angles in a triangle and angles on a straight line to help us deduce the value of missing angles in problems.

• 2 Quizzes
• 11m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Find missing angles in a quadrilateral

In this lesson, we will calculate the missing angles in a quadrilateral. We will revisit the properties of angles in a quadrilateral to help us deduce the value of missing angles in problems.

• 2 Quizzes
• 6m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Find missing angles in a special quadrilateral

In this lesson, we will calculate the missing angles in a trapezium, parallelogram and a kite. We will revisit the properties of these quadrilaterals in order to help us deduce the value of missing angles in diagrams.

• 2 Quizzes
• 6m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Angles in parallel lines with one transversal

In this lesson, we will find missing angles in parallel lines with one transversal

• 2 Quizzes
• 9m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Angles in parallel lines with two transversals

In this lesson, we will find missing angles in parallel lines with two transversals

• 2 Quizzes
• 6m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Find missing exterior angles

In this lesson, we will calculate the size of a missing exterior angle on a regular and irregular polygon

• 2 Quizzes
• 8m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Solve problems involving exterior angles

In this lesson, we will calculate the number of sides a regular polygon has when given an exterior or interior angle

• 2 Quizzes
• 8m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Find missing exterior angles of polygons

In this lesson, we will calculate missing exterior angles of any regular or irregular polygon.

• 2 Quizzes
• 6m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Finding the sum of interior angles in a polygon

In this lesson, we will calculate the sum of interior angles in polygons, and apply this to find missing angles.

• 2 Quizzes
• 4m Video
• Presentation(PPT)
• Worksheet
• Transcript

### Find the number of sides when given the sum of interior angles

In this lesson, we will find the number of sides of a polygon when given only the sum of interior angles.

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

### Find missing angles when two or more polygons are joined

In this lesson, we will apply regular polygon knowledge to find missing angles when two or more polygons are joined together.

• 2 Quizzes
• 8m Video
• Presentation(PPT)
• Worksheet
• Transcript