Used to refer to angles or sides having the same measure and to polygons that have the same shape and size.Īn assumption that is thought to be true based on observations. Two angles are complementary if the sum of their measures totals 90º. The complement of a set is a set of all the elements of the universal set that are not in the given set. Also see: Least Common DenominatorĪ factor that two or more integers have in common. Also commonly called factoring.Ī common multiple of the denominators of two or more fractions. In the product of a constant and a variable the constant is the numerical coefficient of the variable and is frequently referred to simply as the coefficient. Its length is the product of the diameter of the circle and pi. The set of points in a plane equidistant from a point in the plane. 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.
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