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Secondary 1 | Maths
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Mandy
Mandy

Secondary 1 chevron_right Maths chevron_right Singapore

Pls explain why n - 2 ? Why must be 2 ? Tks

Date Posted: 4 years ago
Views: 292
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Mandy
Mandy
4 years ago
Thank you.

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If you look back at the formula, you'll see that n – 2 gives the number of triangles in the polygon, and that number is multiplied by 180, the sum of the measures of all the interior angles in a triangle. ... We multiply 3 times 180 degrees to find the sum of all the interior angles of a pentagon, which is 540 degrees.
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AC Lim
Ac Lim's answer
13124 answers (A Helpful Person)
1st
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AC Lim
Ac Lim's answer
13124 answers (A Helpful Person)
How the formula form. Hope this helps
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Christmas MT
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