geometry

• "geo" means eart and
• "metty" means measure
• point - a position in space. It has only location but no dimension, length, width, thickness and doest notoccupy area.
• line- is a straight,continous arrangement of infinetely many points. Its length is infinite. It extends infinitely in two directions. it has no thickness.
• Arrowheads- symbolizes infinity.
• Plane-a flat surface that extends infinitely along its length and width. It is like an "Infinite sheet of paper". It has lenght and width but no thickness.
• At least three noncollinear points determine a plane.
• Angle- an angle formed by two noncollinear rays with a common point.
• The two rays are called the sides of the angle. The common endpoint is called the vertex.
• An angle can be named in three ways, that is by using (1) the number assigned to the angle, or (2) its vertex or (3) its vertex and two other points, one from each sides of the angle