Quatr.us > Math >Geometry > Quadrilaterals > Rhombuses. Rhombus. A rhombus is a kind of quadrilateral that has two sides that are parallel to each other, and another two sides that are parallel to each other. A rhombus is a special kind of parallelogram, and squares and rectangles are special kinds of rhombus. To figure out the perimeter of the rhombus, you can add the lengths of all the sides together. To figure out the area of a rhombus, you have to cut it into shapes that are easier to figure out. You want to cut it into a rectangle and two right triangles.
James Marshall's discovery of gold at Sutter's Mill in California in 1848, started the California Gold Rush.
Vast Wealth Discovered in the Rockies. Colorado gold rush miner drawing courtesy of Colorful Colorado by Caroline Bancroft. In 1859, the gold rush in Colorado began. Sutter's Mill in California was the site of the first gold discovery in the west. This was in 1849.Imagine reading this exciting headline in your local paper: Pikes Peak, Gold Excitement in the City, A New California.Well, this news appeared in the Leavenworth Times, Kansas.ast Wealth Discovered in the Rockies. Colorado gold rush miner drawing courtesy of Colorful Colorado by Caroline Bancroft. In 1859, the gold rush in Colorado began. Sutter's Mill in California was the site of the first gold discovery in the west. This was in 1849.