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Question
State the name of a regular polygon of 4 sides.
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Solution
A polygon that has equal sides and equal angles is called a regular polygon all 4 angles are also equal(= 90°).
Square:

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| Figure | ![]() |
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| Side | 3 | 4 | 5 | 6 |
| Angle sum | 180° |
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3 × 180° = (5 − 2) × 180° |
4 × 180° = (6 − 2) × 180° |
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