三道数学的填空题1.在三角形ABC中,AD是角BAC的角平分线,DE//AC,EF//BC,AB=15,AF=4,则DE的长等于______.2.在三角形ABC中,AB=AC,AD垂直BC于D,AE=EC,AD=18,BE=15,则三角形ABC的面积是_______.3.已知在梯形ABCD中,AD//EF//B
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 04:37:51
![三道数学的填空题1.在三角形ABC中,AD是角BAC的角平分线,DE//AC,EF//BC,AB=15,AF=4,则DE的长等于______.2.在三角形ABC中,AB=AC,AD垂直BC于D,AE=EC,AD=18,BE=15,则三角形ABC的面积是_______.3.已知在梯形ABCD中,AD//EF//B](/uploads/image/z/10244577-57-7.jpg?t=%E4%B8%89%E9%81%93%E6%95%B0%E5%AD%A6%E7%9A%84%E5%A1%AB%E7%A9%BA%E9%A2%981.%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAD%E6%98%AF%E8%A7%92BAC%E7%9A%84%E8%A7%92%E5%B9%B3%E5%88%86%E7%BA%BF%2CDE%2F%2FAC%2CEF%2F%2FBC%2CAB%3D15%2CAF%3D4%2C%E5%88%99DE%E7%9A%84%E9%95%BF%E7%AD%89%E4%BA%8E______.2.%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2CAB%3DAC%2CAD%E5%9E%82%E7%9B%B4BC%E4%BA%8ED%2CAE%3DEC%2CAD%3D18%2CBE%3D15%2C%E5%88%99%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E9%9D%A2%E7%A7%AF%E6%98%AF_______.3.%E5%B7%B2%E7%9F%A5%E5%9C%A8%E6%A2%AF%E5%BD%A2ABCD%E4%B8%AD%2CAD%2F%2FEF%2F%2FB)
xTKoF+9Œ"5 hz%P'wh~a;~ulR2ȵ%%SBg)ݝ|T^9y?Ѷ*Po_ёMߕo; B5qWbeMH^2*K!'WAkO֮ #b@ɠ
!R$LE`9)~u I/>opv$AQ,+~Qn,?R~s[1)y
@X0C H-
M(#J&K