TheLearnDen

Year 7 · Maths

Derive Use The Sum Of Angles For Deduction

Year 7 learners practise angles in a triangle add up to 180 degrees.

The activities include Find Missing Angles in a Triangle, Find the Missing Angles in a Triangle. The checked support below includes worksheet, video, teaching, lesson. 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 a Triangle
  • Find the Missing Angles in a Triangle

Checked learning resources

  • Angles in Triangles KS3 Walkthrough Worksheet

    Twinkl · Worksheet · Account may be required

    KS3 walkthrough teaching that triangle angles total 180 degrees, with worked missing-angle examples and rules for equilateral, isosceles, right-angled and scalene triangles.

  • 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 lesson slides: Using The Sum Of The Interior Angles Of A Triangle

    Oak National Academy · Teaching · 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 worksheet: Using The Sum Of The Interior Angles Of A Triangle

    Oak National Academy · Worksheet · 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

  • Angles

    BBC Bitesize · Lesson · Opens on the provider website

    Year 7 Maths resource matched to angles in a triangle add up to 180 degrees.