✨ Best Answer ✨
先看左圖，△EFG以EG為底的高=HI=AB=6，
所以FG=6√2，
再看右圖，△EFG以FG為底的高=AB=6，
故△EFG=6√2*6÷2=18√2
Mathematics
Junior High
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想問問計算題，完全沒有想法，謝謝🙏
計算題(10分)
如圖,將長方形ABCDEF摺疊,使得4點落在H點上,B點
落在I點上。若∠EGF=45°,AB=6,求△EFG 的面積。
E
45°
G
B
C
F
H
180
=135:61.5-35
82
2
15
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謝謝！我明白了