18fflanagan
18fflanagan
14-07-2020
Mathematics
contestada
Please help me. Please....
Respuesta :
cleopatra59
cleopatra59
14-07-2020
Answer:
20
Step-by-step explanation:
1/2(a+b)=180
1/2(6+12)=18
1/2(18)=180
9/9=180/9
=20
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