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Secondary 1 | Maths
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Secondary 1 Maths Singapore

Please help asap thank you

Date Posted: 4 years ago

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All external angles add up to 360deg

Total number of external angles in the polygon (excluding the one with 80deg exterior angle)
= (360-80)/35
=8

Add back the 80deg exterior angle:
8+1=9

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Date Posted: 4 years ago

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Louise

4 years ago

Thank you

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