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共 121,118 題
如下圖,△ABC中,D、E分別為AB、BC上一點,且DE// AC。若AB=40、BC=30、 AC=20 、AD=16,則BE=?
已知x、y、z皆不為0,且2x=5y,3x=4z,求 x:y:z=?
下列對於相似形的敘述,何者正確?
如下圖,△ABC中,∠B=90°,且AB=20,BC= 15。若D、E、F分別為AB、AC、BC的中點,則 △DEF的周長為
AA相似性質
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如下圖,BD與CE相交於A點,且BC//DE,AB=8, BC=10, AC=6, AD=6,則△ABC~△ADE的理由應為
x=4,y=272
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若x:6:9 =6:9:y,求x、y之值
ST=9,∠T=96°
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將五邊形ABCDE縮放60%後得到一五邊形PQRST,其中A、B、C、D、E的對應點分別為P、Q、R、S、T。若AB=6、BC=7、CD=8、DE=9,∠A=80°、∠B=90°、∠C=100°、∠D=110°,則ST的長度與∠T的度數分別為?
10:21:15
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設a:b=2:3,a:c=7:5,求a:b:c=?
24
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如下圖,AE與BD相交於C點,AB=12、BC=6、 AC=8、CD=16、CE=12,則DE=?
you want to lose weight.
read it to us.
My family and I ___31.___in our new house for a year
Dear Ms. Chen, fiction, have they? I'm writing to you about my neighbor next door. He has
never feel ______ with his show.
Has Ivy finished her report? Yes, she ______. public.
Hulk ______ five books since his teacher asked him to do the science report.
legal 合法的
Don’t _____ the answer from your classmates. You need to do it by yourself.
Has Ivy finished her report? Yes, she ______.
Paul ______ lunch, but her sisters haven’t.
That’s not a good _____ to skip the breakfast if you want to lose weight.
wish
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I haven’t tried it. Kimmy took out the letter from the _____ and read it to us.
Was the boy tall ______ to get the ball from the tree?
often
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interesting; bored They have _______ felt tired of reading science fiction, have they?