TheLearnDen

Year 8 · Maths

Apply Facts About Angles And Sides

Year 8 learners practise angle facts in triangles and polygons.

The activities include Find Missing Angles in Special Triangles, Calculate Angles Around Polygons, Calculate Missing Angles in Triangles and Straight Lines, and related practice. The checked support below includes teaching, video, lesson, practice. Open a resource in its provider's website and choose the format that best helps the learner explain the idea independently.

Activities covered

  • Find Missing Angles in Special Triangles
  • Calculate Angles Around Polygons
  • Calculate Missing Angles in Triangles and Straight Lines
  • Calculate Missing Interior Angles of Polygons
  • Identify Similar Shapes and Find Missing Lengths
  • Name the Triangle
  • Solve Geometrical Problems with Angles in Parallel Lines

Checked learning resources

  • Geometrical properties: polygons

    Oak National Academy · Teaching · Opens on the provider website

    Current Oak teacher unit support for Apply Facts About Angles And Sides; selected after reading the full activity context: In this worksheet, students will use angle rules to calculate the angles around a polygon.

  • Name the Triangle video

    Corbettmaths Primary · Video · Opens on the provider website

    Year 8 Maths video matched to name the triangle.

  • Geometrical properties: polygons

    Oak National Academy · Lesson · Opens on the provider website

    Year 8 Maths resource matched to angle facts in triangles and polygons.

  • Angles

    BBC Bitesize · Lesson · Opens on the provider website

    Year 8 Maths resource matched to angle facts in triangles and polygons.

  • Name the Triangle practice

    Corbettmaths Primary · Practice · Opens on the provider website

    Year 8 Maths practice matched to name the triangle.

  • Oak video: Using The Sum Of The Interior Angles Of A Triangle

    Oak National Academy · Video · Opens on the provider website

    I can use the fact that the interior angles of any triangle sum to 180° to find the size of missing angles. Missing angles in triangles can be found using the angle sum. Missing angles in triangles can be found using the

  • Oak video: Interior Angles Of A Polygon

    Oak National Academy · Video · Opens on the provider website

    I can find the interior angle of any polygon. Any polygon can be split into triangles. Using these triangles you can demonstrate the rule for the interior angle sum of a polygon. A missing interior angle in any polygon c

  • Oak video: Similarity In Shapes

    Oak National Academy · Video · Opens on the provider website

    I can recognise that similar shapes have sides in proportion to each other but angle sizes are preserved. Two shapes are not similar if there is a pair of lengths with a different multiplicative relationship. Similar sha