如图所示,(1)∠BED与∠CBE是直线________,________被直线________所截形成的________角;
(2)∠A与∠CED是直线________,________被直线________所截形成的________角;
(3)∠CBE与∠BEC是直线________,________被直线________所截形成的________角;
(4)∠AEB与∠CBE是直线________,________被直线________所截形成的________角.
如图,OC⊥AB,OE为∠COB的平分线,∠AOE的度数为_______
如图,(1)∠1,∠2,∠3,∠4,∠5,∠6是直线______,______被第三条直线_______所截而成的;
(2)∠2的同位角是______,∠1的同位角是 _________;
(3)∠3的内错角是______,∠4的内错角是 _________;
(4)∠6的同旁内角是______________,∠5的同旁内角是________.
如图,直线AB,CD,EF相交于点O,则∠AOD的对顶角是_________,∠AOC的邻补角是_______.若∠AOC=50°,则∠BOD=__________,∠COB=______________.
如图,直线AB,CD,EF相交于点O,且AB⊥CD,∠1=30°,则∠2=______.
如图,直线AB、CD相交于点O,EO⊥CD,下列说法错误的是( )
A. ∠AOD=∠BOC B. ∠AOE+∠BOD=90°
C. ∠AOC=∠AOE D. ∠AOD+∠BOD=180°