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Learning objective overview
Master Teaching Guide coverage for this objective.
Current NZC (2007)
GM5-5
New NZC (2026)
NZC26-P4-GEO-SHP-P-Y10-01
Resources
- CorbettMaths - Angles in PolygonsQuestions PDF · Answers
Terminology
- Interior angle
- Exterior angle
- Regular polygon
- Irregular polygon
- Linear pair
Task goals
- Calculate the sum of the interior angles of any polygon using $(n-2) \times 180°$.
- Calculate the sum of the exterior angles of any polygon, and recall that it is always $360°$.
- Find the size of each interior angle of a regular polygon.
- Find the size of each exterior angle of a regular polygon.
- Use a known interior or exterior angle to find the number of sides of a regular polygon.
- Use the fact that an interior angle and its exterior angle form a linear pair (sum to $180°$) to find a missing angle.
Where this fits
What leads into this objective, and where it goes next.
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Internal and external
Also under GM5-5:
For teachers
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