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\begin{tikzpicture}[scale=1.25,rotate=30]
\tkzDefPoints{0.5/1.5/A, 3.5/4/B, 6/2.5/C}
\tkzDrawPolygon(A,B,C)
\tkzDrawPoints(A,B,C)
\tkzLabelPoints[below](A,C)
\tkzLabelPoints[above](B)
\tkzMarkAngle[size=1cm](B,C,A)
\tkzFindAngle(B,C,A)
\tkzGetAngle{angleBCA}
\edef\angleBCA{\fpeval{round(\angleBCA,2)}}
\tkzLabelAngle[pos = 1](B,C,A){$\angleBCA^{\circ}$}
\tkzMarkAngle[size=1cm](C,A,B)
\tkzFindAngle(C,A,B)
\tkzGetAngle{angleBAC}
\edef\angleBAC{\fpeval{round(\angleBAC,2)}}
\tkzLabelAngle[pos = 1.8](C,A,B){%
$\angleBAC^{\circ}$}
\tkzMarkAngle[size=1cm](A,B,C)
\tkzFindAngle(A,B,C)
\tkzGetAngle{angleABC}
\edef\angleABC{\fpeval{round(\angleABC,2)}}
\tkzLabelAngle[pos = 1](A,B,C){$\angleABC^{\circ}$}
\end{tikzpicture}
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