Glossary 343square A parallelogram in which all sides are congruent. A square is a parallelogram with four
congruent sides and four right angles.
square numbers Numbers created by raising a number to the second power.
standard form When a polynomial is written in standard form, the terms are ordered from
highest to lowest degree.
straight angle A straight angle is an angle that measures 180s.
subtrahend In a subtraction problem, the number subtracted from the minuend.
sum The result of addition.
supplementary angles A pair of angles whose measurements total 180s.
surface area The total of the areas of all the faces of a solid.
tangent A line that touches a circle at only one point.
tangent circles Circles that touch at only one point.
term An algebraic expression made up of numbers, variables, or both that is connected only by
multiplication.
transversal A line that intersects two or more other lines.
trapezoid A quadrilateral in which one pair of opposite sides is parallel.
unlike terms Terms with different variables, such as x and y.
variable A letter or symbol that takes the place of a number.
vertex of an angle The point at which the two rays that form the sides of an angle meet.
vertex of a polygon The point at which two sides of a polygon meet.
vertex angle The angle between the equal sides of an isosceles triangle.
vertical angles A pair of angles formed when two lines intersect, which have their vertices at
the point where two lines intersect and do not share a side.
volume The volume of a solid is the measure of the space contained by the solid.
whole numbers The set of numbers {0, 1, 2, 3, 4, ...} formed by adding a zero to the counting
numbers.
x-coordinate The first number in an ordered pair indicates horizontal movement.
y-coordinate The second number in an ordered pair indicates vertical movement.