- Nooksack River § Middle Fork (Wikipedia)
The Middle Fork Nooksack River, about 20 miles (32 km) long, originates on the southern slopes of Mount Baker near Baker Pass. It flows generally northwest between Mount Baker and Twin Sisters, and drains into the North Fork opposite Welcome, about 4.5 km (2.8 mi) northeast of the confluence between the North and South Forks.
- Rhombus (Wikipedia)
In plane Euclidean geometry, a rhombus (plural rhombi or rhombuses) is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length. The rhombus is often called a “diamond”, after the diamonds suit in playing cards which resembles the projection of an octahedral diamond, or a lozenge, though the former sometimes refers specifically to a rhombus with a 60° angle (which some authors call a calisson after the French sweet – also see Polyiamond), and the latter sometimes refers specifically to a rhombus with a 45° angle.