Consider this option: 1. ∠AYC+∠CYD+∠DYB=180°; ⇒ 5z+90°+z=180°; ⇒ z=15°; ⇒ ∠AYC=5z=75°; ∠DYB=15°. 2. Note, that ∠CAF=∠BAE, then ∠BAE+∠CAF+∠CAH+∠HAG+GAE=360-160; ⇒ 2∠CAF+5x=110° (The first equation of the system). ∠GAE+∠HAG+∠CAH+∠CAF=180°;⇒ 5x+∠CAF=90° (The second equation of the system). [tex] \left \{ {{5x+(CAF)=90} \atop {5x+2(CAF)=110}} \right. \ =\ \textgreater \ \ \left \{ {{CAF=20} \atop {x=14}} \right. [/tex] It means, that x=∠CAH=14°; 4x=∠EAG=56°
