Answer:
180-(65+57)=58
Explanation:
There's only 1 angle to find.
45 + 57 + ? = 180 All triangles have interior angles that add to 180.
102 + ? = 180 Combined 45 and 57 Subtract 102 from both sides
? = 180 - 102 Combine
? = 78
1.6m questions
2.0m answers