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היכנס

Mathematics for IGCSE & O level - Angles (Section 3 - No. 14)

If the interior angle of a regular polygon is 150°, how many sides does it have?
6
8
10
12

הֶסבֵּר

Exterior angle = 180° - 150° = 30°. Number of sides = 360° / 30° = 12.

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