This document discusses different types of planar shapes and geometric lines. It defines a trapezium as a quadrilateral with at least one pair of parallel sides. It identifies a parallelogram as a quadrilateral with both pairs of opposite sides parallel. The document also defines different types of circles and lines that can be on a circle, such as a diameter, chord, and tangent. It concludes by identifying different types of triangles based on their side lengths and angle measures.