Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Ask ManyTutors

Question

Secondary 1 | Maths
3 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Mandy
Mandy

Secondary 1 chevron_right Maths chevron_right Singapore

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

Date Posted: 3 years ago
Views: 252
add a comment
Mandy
Mandy
3 years ago
Thank you.

See 3 Answers

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.
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
AC Lim
Ac Lim's answer
12517 answers (A Helpful Person)
1st
Ask ManyTutors
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
AC Lim
Ac Lim's answer
12517 answers (A Helpful Person)
How the formula form. Hope this helps
Ask ManyTutors
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Ramki
Ramki's answer
287 answers (Tutor Details)
If you need further help with the steps or method, email me at [email protected]