15. In the given figure AB || DE. Find the measure of ZBCD.
С
110°
115°
D'
E
A
B4
Answers
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5
Answer:
AB∣∣CD
EF is transversal
∠AGE=45
∘ ∠EGB+45=180
⟹∠EGB=135
∘
∠AGH=135
∘ ⟹∠GHC=45
∠GHD=135
∠DHF=45
∠FHC=135
∠GHC=45
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