AI generatedGeometry and measuresKS3 / GCSE

Exterior angle of a triangle

Exterior angle of a triangle.

  • Identify the relevant shape or angle fact before calculating.
  • Use the labelled information and show each rearrangement.
  • Keep length, area and angle units distinct.

Example 1

Find the exterior angle .

An exterior angle equals the sum of the two opposite interior angles.

Example 2

Find the exterior angle .

An exterior angle equals the sum of the two opposite interior angles.

Your turn

Question 1

Find the exterior angle .

Check answer
An exterior angle equals the sum of the two opposite interior angles.
Question 2

Find the exterior angle .

Check answer
An exterior angle equals the sum of the two opposite interior angles.
Question 3

Find the exterior angle .

Check answer
An exterior angle equals the sum of the two opposite interior angles.
Question 4

Find the exterior angle .

Check answer
An exterior angle equals the sum of the two opposite interior angles.
Question 5

Find the exterior angle .

Check answer
An exterior angle equals the sum of the two opposite interior angles.
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