AB.CD.EF相交于点O,角DOB是它的余角的两倍,角AOE=2角DOF,角AOG=100度,求角EOG的度数
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AB.CD.EF相交于点O,角DOB是它的余角的两倍,角AOE=2角DOF,角AOG=100度,求角EOG的度数
AB.CD.EF相交于点O,角DOB是它的余角的两倍,角AOE=2角DOF,角AOG=100度,求角EOG的度数
AB.CD.EF相交于点O,角DOB是它的余角的两倍,角AOE=2角DOF,角AOG=100度,求角EOG的度数
∠DOB=(90°-∠DOB)*2
∠DOB=60°
∠COG=∠AOG-∠AOC=∠AOG-∠DOB=100°-60°=40°
∠AOC=∠DOB=∠AOE+∠EOC=∠AOE+∠DOF=3∠DOF=60°
∠DOF=60°/3=20°
∠EOG=∠EOC+∠COG=∠DOF+∠COG=20°+40°=60°
∠DOB=(90°-∠DOB)*2
∠DOB=60°
∠COG=∠AOG-∠AOC=∠AOG-∠DOB=100°-60°=40°
=1=>∠AOC=∠DOB=∠AOE+∠EOC=∠AOE+∠DOF=3∠DOF=60°
=2=>∠AOC=∠DOB=∠AOE-∠EOC=∠AOE-∠DOF=∠DOF=60°
=1=>∠DOF=60°/3=20°
∠...
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∠DOB=(90°-∠DOB)*2
∠DOB=60°
∠COG=∠AOG-∠AOC=∠AOG-∠DOB=100°-60°=40°
=1=>∠AOC=∠DOB=∠AOE+∠EOC=∠AOE+∠DOF=3∠DOF=60°
=2=>∠AOC=∠DOB=∠AOE-∠EOC=∠AOE-∠DOF=∠DOF=60°
=1=>∠DOF=60°/3=20°
∠EOG=∠EOC+∠COG=∠DOF+∠COG=20°+40°=60°
=2=>∠DOF=60°
∠EOG=∠EOC-∠COG=∠DOF-∠COG=60°-40°=20°
20或60
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