TheLearnDen

Year 10 / GCSE · Maths

Angles

Year 10 / GCSE learners practise angle rules and bearings gcse.

The activities include Apply Congruence Rules, Calculate Angle Sizes Within Polygons, Calculate External Angles of a Polygon, and related practice. The checked support below includes video, teaching, worksheet, practice. Open a resource in its provider's website and choose the format that best helps the learner explain the idea independently.

Activities covered

  • Apply Congruence Rules
  • Calculate Angle Sizes Within Polygons
  • Calculate External Angles of a Polygon
  • Calculate Interior and Supplementary Angles
  • Find Internal and External Angles in Polygons
  • Identify Corresponding Angles
  • Identify Vertically Opposite Angles
  • Measure and Read Bearings
  • Recognise Alternate Angles
  • Solve Problems Involving Parallel Lines
  • Use Angle Properties Around a Point
  • Use Angle Properties in a Triangle
  • Use Angle Properties on a Straight Line

Checked learning resources

  • Congruent triangles

    Corbett Maths · Video · Opens on the provider website

    GCSE video tests triangle congruence using SSS, SAS, ASA or AAS and RHS, with attention to corresponding sides and angles.

  • Interior angles of polygons

    Oak National Academy · Video · Opens on the provider website

    GCSE lesson calculates the interior-angle sum using (n - 2) × 180°, finds one interior angle in a regular polygon and works backwards from an interior angle to the number of sides.

  • Exterior angles of polygons

    Oak National Academy · Video · Opens on the provider website

    GCSE lesson uses the 360° exterior-angle sum to calculate an exterior angle of a regular polygon and determine the number of sides.

  • Angles in parallel lines

    Corbett Maths · Video · Opens on the provider website

    GCSE video identifies corresponding F angles and alternate Z angles as equal, co-interior C angles as supplementary to 180°, and vertically opposite angles as equal.

  • Angles in polygons

    Corbett Maths · Video · Opens on the provider website

    GCSE video calculates interior and exterior angles of regular polygons, uses their supplementary relationship and works backwards to the number of sides.

  • Vertically opposite angles

    Corbett Maths · Video · Opens on the provider website

    GCSE video identifies equal vertically opposite angles at intersecting lines and calculates unknown numerical or algebraic values.

  • Bearings

    Corbett Maths · Video · Opens on the provider website

    GCSE video reads, measures and constructs three-figure bearings clockwise from a north line, including bearings on scale diagrams.

  • Chains of reasoning with angle facts

    Oak National Academy · Video · Opens on the provider website

    GCSE lesson solves multi-step parallel-line problems by combining corresponding, alternate and co-interior angles with straight-line and point facts, including algebraic unknowns.