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如图,在Rt△ABC中,∠ACB=90°,AC=BC=2,以BC为直径的半圆交AB于点D,P是上的一个动点,连结AP.则AP的最小值是
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如图在Rt△ABC中∠ACB=90°AC=6BC=4将△ABC绕直角顶点C.顺时针旋转90°得到△D
如图已知Rt△ABC中∠ACB=90°D.是AB的中点CD=2cm则AB=.
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如图Rt△ABC中∠ACB=90°AC=BC=2若把Rt△ABC绕边AB所在直线旋转一周则所得几何体
如图在Rt△ABC中∠ACB=90°AC=BC=1将Rt△ABC绕A.点逆时针旋转30°后得到Rt△
如图在Rt△ABC中∠ACB=90°D.E.分别是ACAB的中点DE=3CE=5则AC=.
如图在Rt△ABC中∠ACB=90°AC=BC=1将Rt△ABC绕A.点逆时针旋转30°后得到Rt△
如图已知Rt△ABC中∠ACB=90°CD是高∠
=30°,BD=2cm,求AB的长( )
A.4
6
8
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如图4240在Rt△ABC中∠ACB=90°AC=3BC=4以点A.为圆心AC长为半径画弧交AB
如图Rt△ABC中∠ACB=90°AC=BC=2若把Rt△ABC绕边AB所在直线旋转一周则所得几何体
在Rt△ABC中∠ACB=90°AB=4AC=2则cosB=.
如图在Rt△ABC中∠ACB=90°CD是AB边上的高AC=6AB=9则AD=
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如图Rt△ABC中∠ACB=90°AB=6D.是AB的中点则CD=.
如图在Rt△ABC中∠ACB=90°AC=BC=2将Rt△ABC绕点A.逆时针旋转30°后得到Rt△
如图在Rt△ABC中∠ACB=90°DEDF是△ABC的中位线连接EFCD.求证EF=CD.
如图在Rt△ABC中∠ACB=90°AD平分∠BAC与BC相交于点D若BD=4CD=2则AB的长是.
如图Rt△ABC中∠ACB=90°CD⊥AB于D.∠ACD=40°则∠B.=
如图所示在Rt△ACB中∠ACB=90°∠A=25°D.是AB上一点.将Rt△ABC沿CD折叠使B.
25°
30°
35°
40°
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