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Lessons (12)
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 Slide deck
1 Worksheet
1 Quiz
1 Video
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.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
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.
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1 Worksheet
2 Quizzes
1 Video
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.
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1 Worksheet
2 Quizzes
1 Video
In this lesson, we will find missing angles in parallel lines with one transversal
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1 Worksheet
2 Quizzes
1 Video
In this lesson, we will find missing angles in parallel lines with two transversals
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1 Worksheet
2 Quizzes
1 Video
In this lesson, we will calculate the size of a missing exterior angle on a regular and irregular polygon
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2 Quizzes
1 Video
In this lesson, we will calculate the number of sides a regular polygon has when given an exterior or interior angle
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1 Worksheet
2 Quizzes
1 Video
In this lesson, we will calculate missing exterior angles of any regular or irregular polygon.
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2 Quizzes
1 Video
In this lesson, we will calculate the sum of interior angles in polygons, and apply this to find missing angles.
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1 Video
In this lesson, we will find the number of sides of a polygon when given only the sum of interior angles.
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2 Quizzes
1 Video
In this lesson, we will apply regular polygon knowledge to find missing angles when two or more polygons are joined together.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video