f.2 plane Geometry

2007-04-27 3:02 am
睇圖...畫得唔好...一個係6邊形,一個係5邊形,希望你地睇得明

http://xs314.xs.to/xs314/07174/NN.png

回答 (2)

2007-04-27 3:49 am
a)

a = √(52 – 42)

= 3cm

b)

因為 PQRS 是一長方形所以對邊相等

b = a = 3cm

c = QR = 4cm
2007-04-27 3:09 am
angle GFE=108
angle AFE=120
so x=360-120-108=132
參考: me


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