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Setler79 [48]
3 years ago
5

I need help with this pls

Mathematics
1 answer:
Aleks [24]3 years ago
5 0

Answer:

the sum of interior angles of a triangle is =180

so.......

80 + 40 + x=180

120 + x= 180

x = 180 - 120

x = 60

60 is an acute angle

If you understand please like and follow me

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