Lucymiller
Lucymiller
04-03-2018
Mathematics
contestada
please help me to work this out
Respuesta :
Аноним
Аноним
04-03-2018
Theorem: An exterior angle
of a triangle is equal to the
sum
of the
opposite interior angles
.
a+ 60 = 115
a = 115 - 60
a = 55
°
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