Abstract: A connecting element for a construction toy is designed so that an assembly of two such connector elements provides for connections in each of two planes oriented at right angles to each other. Each connecting element is of generally flat form, of open construction, not unlike the configuration of a snowflake. The connector provides for a plurality of radially oriented strut-receiving sockets angularly spaced about the central axis of the connector. At one side, there is an open-sided recess extending from the outer edge to the central axis and of a size and shape to receive a connector element of like construction. Detent means are provided so that an assembled pair of connectors is locked together. In general, the sockets are arranged to require lateral, snap-in assembly of struts. However, the sockets located directly opposite the open-sided recess are designed to accommodate a twist-in assembly, as lateral assembly is precluded by the presence of a second, right angularly oriented connector element.