“…The application of graph theory in various fields in daily activities has been widely investigated, and the focuses include computer science (Cvetković & Simić, 2011;Singh & Vandana, 2014), health (Mears & Pollard, 2016;Vecchio et al, 2017), transportation (Lanjewar et al, 2015Nelson et al, 2019), geology model (Phillips et al, 2015), banking (Lin et al, 2011), architecture design (Poyias & Tuosto, 2015;Zboinska, 2015), regional planning (Foltête et al, 2014), biology (Gao et al, 2018;Garroway et al, 2008), and the electrical system (Benchouia et al, 2014;Šarga et al, 2012). In addition, several studies investigated the use of graph theory in learning process in class (Asghari et al, 2012;Medová et al, 2019;Nabiyev et al, 2016;Uyangör, 2019). Asghari et al (2012) in their study show that graph theory allows students to think creatively, construct a collection of ideas, and use graph representations in solving problems.…”