Brenda's answer to Nicole She's Secondary 4 E Maths Singapore question.

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Brenda
Brenda's answer
37 answers (Tutor Details)
1st
Recall formula to find each interior angle (refer to first line), n represent number of sides.

1l Apply formula for polygon A and B.
2) Use angles at a point to solve for interior angle of C.
3) Apply formula again to find n of polygon C.