Ageometric isomer with two alkyl groups on the same side of the carbon-carbon double bond is called

             A geometric isomer with two alkyl groups on the same side of the carbon-carbon double bond is called cis Isomer.

Explanation:
                   Geometric isomerism takes place about the double bond in alkenes when the alkyl groups are either situated at the same side (cis) or are situated opposite (trans) to each other.

Example:
               cis-2-Butene (highlighted red)

               trans-2-Butene (highlighted blue)

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