6th Grade STAAR Math Vocabulary – Flashcards
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acute angle
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An angle measuing more than 0 degrees and less than 90 degrees
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congruent
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Having the same size and shape
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factor
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Any number multiplied to form a product. A product can be divided by one factor to find the other factor.
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equivalent
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Having the same value
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inverse
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Reversed position or direction
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vertex (vertices - plural)
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The point of intersection for two sides of a plane figure, three sides of a solid figure, or the endpoints of two rays that form an angle.
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common denominator
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A number that is a multiple of all denominators in a problem.
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polygon
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Three or more line segments in a plane that forms a closed figure. The line segments never cross but meet at their endpoints.
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product
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The result of multiplying two or more numbers.
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prime number
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A number with only two factors: the number itself and one.
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range
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The difference between the least and greatest values in a set of numbers.
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scalene triangle
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A triangle with sides of different lengths and no two angles are the same.
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area
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Surface space that is measured in square units.
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perimeter
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The distance around a figure.
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circumference
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The distance around a circle (the perimeter of a circle).
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angle
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The figure formed when two rays meet at a common endpoint called a vertex.
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common factor
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A number that is a factor of two or more numbers.
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complementary angles
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Two angles whose sum equals 90 degrees.
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diameter
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A line segment that passes through the center of a circle and has its endpoints on the circle. It describes how wide the circle is.
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greatest common factor (GCF)
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The largest single factor for two or more numbers.
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hexagon
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A polygon with six sides.
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integers
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All whole numbers (both positive and negative) and zero.
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mean
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The sum of a group of numbers divided by the number of numbers. Also known as the average.
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median
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A value found by ordering a group of data from least to greatest and choosing the middle value of the group.
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mode
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In a group of values, the value that occurs most often.
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numerator
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The part of a fraction that stands for how many parts of a whole or group are included in the fraction.
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quadrilateral
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A polygon that has four sides.
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parallelogram
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A quadrilateral with two pairs of congruent, parallel sides.
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rectangle
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A parallelogram with four right angles
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sample
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Part of the population that is studied to find the characteristics of the whole population.
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composite number
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A positive whole number with more than two factors. In other words, a number that is not prime. Zero and one are neither composite nor prime.
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denominator
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The part of a fraction that stands for the number of equal parts a whole or group is divided into.
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cross product
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In an equation made up of two fractions, the numerator of one fraction times the denominator of the other fraction.
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improper fraction
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A fraction with a numerator that is larger than or equal to its denominator.
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like fractions
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Two or more fractions that have the same denominator
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least common multiple (LCM)
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The smallest multiple that two or more numbers have in common
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mixed number
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A value that combines a whole number and a fractional amount
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octagon
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An eight-sided polygon
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parallel lines
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Lines in the same plane that do not intersect. The symbol //
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percent
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The ratio of a number to 100 (per one hundred). The symbol %
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prime factorization
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Breaking down a composite number until all of the factors are prime
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probability
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The likelihood that an event will occur. The probability that an event will occur is 0, 1, or somewhere between 0 and 1.
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radius
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A length that is half the diameter of a circle; the distance from the center of the circle to the circle itself.
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right angle
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An angle that measures 90 degrees
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right triangle
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A triangle with one right angle
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supplementary angles
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Two angles whose sum is 180 degrees
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order of operations
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Rules that tell which steps to follow when solving an expression.
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inverse operations
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Operations that do the exact opposite of each other; they undo each other (addition and subtraction, for example)
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lowest terms
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A fraction with all common factors (other than 1) factored out of the numerator and denominator
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pi
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The value that shows the relationship of a circle's circumference to its diameter; it has an approximate value of 3.14
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prism
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A solid figure that has two congruent, parallel polygons as its bases. Its sides are parallelograms
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ratio
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A comparison of the two values of two numbers
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proportion
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An equation stating that two ratios are equal
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simplify
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To make a fraction easier to work with by taking out common factors. In an expression, combining variables that have like unknowns.
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square unit
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A unit for measuring area
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unit ratio
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A ratio that shows the cost per unit of measure
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x-axis
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The horizontal number line of a coordinate graph
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y-axis
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The vertical number line of a coordinate graph
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x-coordinate
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The value on the x-axis used to locate a point on the coordinate graph. It is the first value in an ordered pair.
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y-coordinate
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The value on the y-axis used to locate a point on the coordinate graph. It is the second value in an ordered pair.
