∠1= 104°∠2= 76°∠3= 76°∠4= 104°
∠5= 104°
∠6= 76°
∠7= 76°∠8= 104°∠1=∠4=∠5=∠8∠2=∠3=∠6=∠7∠2= 180°-104°
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∠1= 104°
∠2= 76°
∠3= 76°
∠4= 104°
∠5= 104°
∠6= 76°
∠7= 76°
∠8= 104°
∠1=∠4=∠5=∠8
∠2=∠3=∠6=∠7
∠2= 180°-104°