Also see: Coordinate Plane.Ī graph in which rectangular bars, either vertical or horizontal, are used to display data. is an arithmetic sequence if there is a number c such that for each n, an + 1= an + c, that is an + 1 – an = c.įor any numbers x, y, and z: (x + y) + z= x + (y + z).Ī distinguishing characteristic of an object such as angles or sides of a triangle.Ī number line in a plane. The surface area of a two-dimensional figure.Ī mathematical model based on the area of a rectangle, used to represent multiplication or to represent fractional parts of a whole.Ī sequence a1, a2, a3, a4. AD is an altitude of the triangleĪn angle is formed when two rays share a common vertex. Two angles that share a common vertex and a common side.Ī segment drawn from a vertex of the triangle perpendicular to the opposite side of the triangle, called the base, (or perpendicular to an extension of the base). Example of an acute angleĪ triangle in which all three angles are acute angles.įor any number x, there exists a number −x, such that x + −x= 0. For any x, |x| is defined as follows: | x |= x, if x > 0, and | x |= −x, if x
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