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如图,已知在△ABC中,∠A=90°. (1)请用圆规和直尺作出⊙P,使圆心P在AC边上,且与AB,BC两边都相切(保留作图痕迹,不写作法和证明). (2)在(1)的条件下,若∠B=45°,AB...
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如图已知△ABC请用圆规和直尺作出△ABC的一条中位线EF不写作法保留作图痕迹.
我们学习过在平面内将一个图形绕一个定点沿着某一个方向转动一个角度这样的图形运动叫做旋转这个定点叫旋转
如图已知△ABC请用圆规和直尺作出△ABC的一条中位线EF不写作法保留作图痕迹.
如图6316已知△ABC且∠ACB=90°.1请用直尺和圆规按要求作图保留作图痕迹不写作法和证明
如图已知△ABC和点O..1把△ABC绕点O顺时针旋转90°得到△A1B1C1在网格中画出△A1B1
如图已知在△ABC中∠A=90°请用圆规和直尺作⊙P使圆心P在AC上且与ABBC两边都相切.要求保
.如图已知在△⊙ABC中∠A.=90°请用圆规和直尺作⊙P.使圆心P.在AC上且与ABBC两边都相切
如图24—B.—16已知在△⊙ABC中∠A.=90°请用圆规和直尺作⊙P.使圆心P.在AC上且与AB
如图已知△ABC且∠ACB=90°.1请用直尺和圆规按要求作图保留作图痕迹不写作法和证明①以点A为圆
如图已知△ABC中∠ACB=90°∠A.=30°请用尺规在AC边上作一个点P.使得PA=2PC.保留
如图已知在△ABC中AB=AC.请用直尺和圆规在AC上找一点D使AD=BD.不写作法但需保留作图痕
我们学习过:在平面内将一个图形绕一个定点沿着某个方向转动一个角度这样的图形运动叫做旋转这个定点称为旋
已知△ABC1请用直尺和圆规作一个三角形使所画三角形与△ABC全等2请简要说明你所作的三角形与△AB
如图已知等边△ABC请用直尺不带刻度和圆规按下列要求作图不要求写作法但要保留作图痕迹1作△ABC的外
如图已知在△ABC中∠A.=90°1请用圆规和直尺作出⊙P使圆心P在AC边上且与ABBC两边都相切保
如图已知△ABC且∠ACB=90°1请用直尺和圆规按要求作图保留作图痕迹不写作法和证明①以点B.为圆
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