\input{preamble-standalone.ltx} \begin{document} % Ex. No. 186 (Section 22.3.1 : Verification of angle measurement) \begin{tikzpicture}[scale=.75] \tkzDefPoint(-1,1){A} \tkzDefPoint(5,2){B} \tkzDefEquilateral(A,B) \tkzGetPoint{C} \tkzDrawPolygon(A,B,C) \tkzFindAngle(B,A,C) \tkzGetAngle{angleBAC} \edef\angleBAC{\fpeval{round(\angleBAC)}} \tkzDrawPoints(A,B,C) \tkzLabelPoints(A,B) \tkzLabelPoint[right](C){$C$} \tkzLabelAngle(B,A,C){\angleBAC$^\circ$} \tkzMarkAngle[size=1.5cm](B,A,C) \end{tikzpicture} \end{document}