PLATE TECTONIC CYCLE - PLATE TECTONICS (6) PRE LAB OBJECTIVES: 1. Comparing plate boundaries. 2. Locating different plates. VOCABULARY: converging diverging plate boundary transform motion MATERIALS: worksheet relief map of the world BACKGROUND: According to the theory of plate tectonics, the Earth's crust and upper mantle are Triangles are used to make rafters in buildings and curved domes. Some bridges have triangular structures, and the Egyptians made triangular-shaped pyramids. The shapes help surveyors use triangulation to determine the distance of a specific point from two other points of a known distance apart. Paul Cleary of Oxford (UK) wrote to me in October 2013 to say that there are only 6 pythagorean triangles that have a given prime number as the ratio A/P. It seems there are always more than 6 when the ratio is a composite number for a ratio of 5 or more. For example, for ratios up to 8, we only have the following PTs:

Paul Cleary of Oxford (UK) wrote to me in October 2013 to say that there are only 6 pythagorean triangles that have a given prime number as the ratio A/P. It seems there are always more than 6 when the ratio is a composite number for a ratio of 5 or more. For example, for ratios up to 8, we only have the following PTs: How Many Triangles How Many Triangles. Hint > Back. Solution > More Brain Teasers. Penny Triangle. Toothpick Squares. Connect the Dots. Handshake Puzzle. www.arvindguptatoys.com