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\( α = 45°, β = 50° \) a \( \normalsize\gamma=60\degree \)
\( α + β + γ = 45° +\ 50° +\ 60° =\ 155° \)
\( \normalsize155\degree\neq180\degree \)
\( α + β + γ = 40° +\ 50° +\ 60° =\ 150° \)
\( \normalsize150\degree\neq180\degree \)
\( α + β + γ = 45° +\ 50° +\ 70° =\ 165° \)
\( \normalsize165\degree\neq180\degree \)
\( α + β + γ = 45° +\ 60° +\ 60° =\ 165° \)
\( \normalsize165\degree\neq180\degree \)