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Stells [14]
2 years ago
10

Hehejdkekldmtkskdmfmmdmdnr

Mathematics
1 answer:
MakcuM [25]2 years ago
6 0
The answer is - 17.8. You need add 18.8 and 17.7 then you get 36.5. then you subtract 36.5 and get negative 17.8
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Answer:

Step-by-step explanation:

Before giving the exterior angles, find the third angle. A triangle (all triangles) measure 180 degrees.

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Answer:

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Step-by-step explanation:

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