Biber, A. Ç., Korkmaz, S., Tuna, A., &Amp; Aliustaoğlu, F. (2018). Analysis Of Defining And Drawing Skills Of Secondary School Students: Parallelogram Example. International Conference On Mathematics And Mathematics Education (Icmme-2018), 536-537, Ordu. - Biber Abdullah Çağrı; Tuna Abdulkadir; Korkmaz Samet; Aliustaoğlu Feyza (My University, 2018)