1. 5β = 90°
β = 18
3. 4x = 80
x=20
4. 18 + y = 90 Luego:
y = 72 y + x=180
72+x=180
x = 108
5. 180-116=62
x+62=90
x=28
6. AB + BC = r + r
12 + x = 8 + 8
x = 4
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Resolucion:
1. 5β = 90°
β = 18
3. 4x = 80
x=20
4. 18 + y = 90 Luego:
y = 72 y + x=180
72+x=180
x = 108
5. 180-116=62
x+62=90
x=28
6. AB + BC = r + r
12 + x = 8 + 8
x = 4