Trapezium Post author By Rik D. Tangerman Post date January 25, 2021 No Comments on Trapezium A quadrilateral with at least one pair of parallel sides. Also known as trapezoid. ← AAS → Tangent-chord theorem Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Δ Optionally add an image (JPEG only)