Geometry & MeasuresMedium Exam FrequencyAQAEdexcelOCRWJEC
Angles in Polygons
Revise Angles in Polygons in Geometry & Measures for GCSE Mathematics with 12 exam-style questions and 3 flashcards. This topic appears regularly enough that it should be part of a solid GCSE revision cycle.
Study this topic
1Introduction2Key Facts3Key Facts4Notes5Notes6Notes7Notes8Notes9Notes
The Triangle Trick
Essential Formulas
Common Polygon Angles
Worked Example 1: Interior Angle Sum
Worked Example 2: Regular Polygon Interior Angle
Worked Example 3: Finding Number of Sides
Worked Example 4: Missing Angle in Irregular Polygon
Common Mistakes
Practice Questions
Sample Flashcards
Interior Angle Sum
Sum = (n - 2) × 180° for n-sided polygon
Exterior Angle Sum
Always 360° for any polygon
Sample Questions
What is the sum of the interior angles of a hexagon?
Explain how the formula (n − 2) × 180° for the sum of interior angles of a polygon is derived.
12
exam-style questions
3
revision flashcards
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