What is a straight line passing from side to side through the centre of a circle called?
Triangle the most commonly encountered constructions are explained. A perpendicular bisector of a side of a triangle is a straight line passing through the midpoint of the side and being perpendicular to it, i.e. forming a right angle with it. The three perpendicular bisectors meet in a single point, the triangle's circumcenter, usually denoted by O; this point is the center of the circumcircle, the circle passing through all three vertices. The diameter of this circle, called the "circumdiameter", can be found from the law of sines stated above. The circumcircle's radius is called the "circumradius". Thales' theorem implies that if
West Side Line built through the second or third floors of several buildings along the route; others were served directly by elevated sidings. In 1937 the tracks along Eleventh Avenue were bypassed by a below-grade line, passing under the 35th Street intersection and running north just west of Tenth Avenue before slowly curving northwest, passing under Eleventh Avenue at 59th Street and rejoining the original alignment. Around the same time, master builder and urban planner Robert Moses covered the line with an expansion of Riverside Park from 72nd Street north to 120th Street. His project, called the "West Side Improvement", was twice as