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gladu [14]
4 years ago
15

I'm a little stuck xD

Mathematics
2 answers:
Semmy [17]4 years ago
4 0
There are 180 degrees in a triangle when you add the measures of the angles together.  So...
102 + 39 + x = 180
141 + x = 180
x = 39
kap26 [50]4 years ago
3 0
It's 39 because a triangle adds up to 180. so you can add 39 and 102 and get 141 and subtract that from 180, getting 39. the missing angle
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