Mathematics
Junior High
這題答案給6和6.5
想問6.5是怎麼算的
3. 如右圖所示,ABCD為一等腰梯形,AD=4,BC=6,E為AD中點,F為BC中點。若
=
EF = 5,在EF上找一點G,使∠AGB=90度,求△AGB 面積?
B
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