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41 votes
41 votes
What is this? Help would be highly appreciated:)

What is this? Help would be highly appreciated:)-example-1
User MCBama
by
3.3k points

1 Answer

24 votes
24 votes

Answer:

19

Explanation:

straight line=180°

180-123=57

57/3=19

19*3=57

User Mstef
by
3.0k points