chrystell's answer to gwen's Secondary 4 E Maths question.
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the interior angles are 150°, so the exterior angles are 180°-150°=30°. the exterior angles add up to 360°, so if we divide 360° by 30° there are 12 exterior angles. Therefore, there are 12 sides :)
Date Posted:
7 years ago
thank uuu!!
thank u!!! hehe
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