|x-3|=3-x,则x的取值范围是 .
如图△ABC中,∠B=∠C,FD⊥BC,DE⊥AB,∠AFD=158°,则∠EDF=________.
直接根据图示填空: (1)∠α=_________ (2)∠α=_________ (3)∠α=_________ (4)∠α=_________ (5)∠α=_________ (6)∠α=_________ (1)(2)(3) (4)(5)(6)
如图,Rt△ABC中,∠A=30°,AB+BC=12cm,则AB=__________cm.
如图,△ABC是等边三角形,AD⊥BC,DE⊥AB,垂足分别为D,E,如果AB=8cm,则BD=__________cm,∠BDE=(__________)°,BE=__________cm.
如图,已知△ABC是等边三角形,AD∥BC,CD⊥AD,垂足为D、E为AC的中点,AD=DE=6cm,则∠ACD=(__________)°,AC=__________cm,∠DAC=(__________)°,△ADE是__________三角形.