Year 8

Angles in polygons

Lessons (12)

• In this lesson, we will learn about the interior angles in a triangle, and how to find unknown angles in various types of triangles.
1 Slide deck
1 Worksheet
1 Quiz
1 Video
• In this lesson, we will learn about the key terminology involved in describing polygons, and begin to categorise polygons, based on certain properties.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn how to arrange triangles to form polygons as part of an investigation into the internal angles of polygons. This represents part 1 of a two-part lesson.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn how to arrange triangles to form polygons as part of an investigation into the internal angles of polygons. This represents part 2 of a two-part lesson.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn that the sum of the interior angles of a polygon can be found using triangles.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn how to generalise the sum of the interior angles in an n-sided polygon.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn how to apply the generalisation of the total interior angles in an n-sided polygon.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn how to find an unknown angle in a polygon.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn about exterior angles, and how they sum to 360 degrees.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn how to calculate the mean interior and exterior angles of n-sided polygons, and solve problems based on these formulae.
1 Slide deck
1 Worksheet
1 Quiz
1 Video
• In this lesson, we will combine everything learnt so far about angles in polygons to compare how specific examples relate to generalised cases.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video
• In this lesson, we will learn about how to problem solve with angles in polygons, along with learning notations for referring to angles.
1 Slide deck
1 Worksheet
2 Quizzes
1 Video