idaly1
idaly1
05-05-2017
Mathematics
contestada
how do you do this? it's an exterior angle.
Respuesta :
Cacteui2
Cacteui2
05-05-2017
Let the unknown angle inside the triangle = a
L
a = 180 - (64 + 76)
L
a = 180 - 140
L
a = 40°
Now to the k.
K is an exterior angle.
L
k +
L
a = 180
°
180° - 40° =
L
k
= 140°
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