https://chem.libretexts.org/Courses/Monterey_Peninsula_College/CHEM_30B%3A_Organic_and_Biological_Chemistry_for_Health_Sciences/02%3A_Unsaturated_Hydrocarbons/2.02%3A_Cis-Trans_Isomers_(Geometric_Isomers)
2.2: Cis-Trans Isomers (Geometric Isomers) - Chemistry LibreTexts
Dec 20, 2020 - Cis-trans (geometric) isomerism exists when there is restricted rotation in a molecule and there are two nonidentical groups on each doubly bonded carbon atom.
cistransisomersgeometricchemistry