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More Lessons for GCSE Maths

Math Worksheets

Examples, solutions, and videos to help GCSE Maths students learn how to find the interior and exterior angles of polygons.

**Finding the interior angles of a polygon**
**Geo ScreenCast 7: Polygon Angles**

Using the sum of a polygon's interior angles to solve for a missing angle.

**Geo ScreenCast 8: Regular Polygon Angles**

Finding 1 interior angle of a regular polygon.

Example:

Find the measure of one interior angle of a regular dodecagon.
**Geo ScreenCast 9: Polygon Exterior Angles**

Finding an exterior angle of a regular polygon.

Example:

A regular polygon has an exterior angle that measures 40°. How many sides does the polygon have?

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

More Lessons for GCSE Maths

Math Worksheets

Examples, solutions, and videos to help GCSE Maths students learn how to find the interior and exterior angles of polygons.

Using the sum of a polygon's interior angles to solve for a missing angle.

Finding 1 interior angle of a regular polygon.

Example:

Find the measure of one interior angle of a regular dodecagon.

Finding an exterior angle of a regular polygon.

Example:

A regular polygon has an exterior angle that measures 40°. How many sides does the polygon have?

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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