Parallelogram Properties Diagram - Geometry Reference #3251846 (License: Personal Use)

The image displays parallelogram EFGD with vertices labeled clockwise. Opposite sides EF and DG, as well as ED and FG, are marked with double and single tick marks respectively to indicate equality. Angles at E, F, G, and D are shown congruent in pairs using arc markings, and the diagonals EG and DF intersect at their midpoint, confirming the parallelogram’s symmetry. Double-bar symbols on EF and DG denote parallelism.

This image is commonly used in high school or college geometry resources, textbooks, and online tutorials to teach or reinforce properties of parallelograms-especially for visual learners studying Euclidean geometry, proofs, or quadrilateral classification.