因為補習老師唔得閒，我同姪女又唔識做呢條數，所以想請教各位:
Each exterior angle of an n-sided regular polygon is greater than 40°c. Find the greatest possible value of n.
麻煩哂咁多位呀 
Sum of exterior angles for any polynomial is always 360
Since polynomial has n angles, each with exterior angle is A, then
sum of exterior angles will be nA
Given, nA=360
∴A=360/n
We are given that: A>40
⇒ 360/n>40
⇒ 360>40n
不同多邊形嘅外角表列
3 = 120
4 = 90
5 = 72
6 = 60
7 = 51.4
8 = 45
9 = 40
所以答案已經呼之欲出
但我比 is greater than 40°c 呢幾個字 click 住咗 
我細過數學科無一次合格過 
即40度唔啱
要上多一格，45度
唔緊要，今次你會滿分
1個讚
我姪女千叮萬囑我，一定要同你講聲多謝，因為佢話明咗啲道理。真係唔該哂你呀 好人一生平安
1個讚
咁開心
咁佢以後見到呢類題型都一定滿分
Btw…唔客氣
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