7th & 8th Grade TAKS Math Vocabulary
These are words you need to know and will likely see on the 7th and 8th grade TAKS Math tests. Thanks to Mrs. Angelo from Marshall for the list.
Terms
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- right triangle
- A triangle with one right angle
- prism
- a solid figure that has two congruent, parallel polygons as its bases. Its sides are parallelograms.
- difference
- The amount that remains after one number has been subtracted from another
- area
- Surface space that is measured in square units
- isosceles triangle
- A triangle with two equal sides and two equal angles
- x-axis
- The horizontal number line of a coordinate graph
- lowest terms
- A fraction with all common factors (other than 1) factored out of the numerator and denominator
- square root
- A number that when multiplied by itself results in the original number
- similar figures
- Figures that have the same shape but different sizes; their sides are proportional, while their corresponding angles are equal
- ratio
- A comparison of the two values of two numbers
- quotient
- The result of dividing one number by another; the solution to a division problem
- perimeter
- The distance around a figure
- quadrant
- One of the four regions formed by the intersection of the axes of a coordinate graph
- scalene triangle
- A triangle with sides of different lengths and no two angles are the same
- mean
- The sum of a group of numbers divided by the number of numbers; also known as the average
- unit ratio
- A ratio that shows the cost per unit of measure
- exponent
- A number that tells how many times the base is multiplied by itself
- trapezoid
- A quadrilateral with one pair of parallel sides
- divisor
- In a division problem, the number that an amount is divided by
- radius
- A length that is half the diameter of a circle; the distance from the center of the circle to the circle itself
- octagon
- An eight-sided polygon
- mode
- In a group of values, the value that occurs most often
- parallelogram
- a quadrilateral with two pairs of congruent, parallel sides
- sum
- The total of two or more numbers being added
- y-coordinate
- The value on the y-axis used to locate a point on the coordinate graph. It is the second value in an ordered pair.
- hexagon
- A polygon with six sides.
- straight angle
- An angle that measures 180 degrees
- equilateral triangle
- A triangle that has three equal sides and three equal angles
- acute angle
- An angle measuring more than zero degrees and less than 90 degrees
- supplementary angles
- Two angles whose sum is 180 degrees
- rectangle
- A parallelogram with four right angles
- quadrilateral
- A polygon that has four sides
- circumference
- The distance around a circle (the perimeter of a circle)
- polygon
- Three or more line segments in a plane that forms a closed figure. The line segments never cross but meet at their endpoints.
- pentagon
- A polygon with five sides
- proportion
- An equation stating that two ratios are equal
- median
- A value found by ordering a group of data from least to greatest and choosing the middle value of the group.
- order of operations
- Rules that tell which steps to follow when solving an expression
- rhombus
- A parallelogram with all sides equal and congruent
- ordered pair
- Two numbers listed in a specific order; it describes a point on the coordinate graph
- congruent
- Having the same size and shape
- cylinder
- A solid figure with two congruent and parallel circular bases
- simplify
- To make a fraction easier to work with by taking out common factors
- diameter
- A line segment that passes through the center of a circle and has its endpoints on the circle
- vertex (vertices - plural)
- 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.
- y-axis
- The vertical number line of a coordinate graph
- x-coordinate
- The value on the x-axis used to locate a point on the coordinate graph. It is the first value in an ordered pair.
- reciprocal
- The inverse of a fraction; when multiplied by the original fraction, it results in a product that equals one
- dividend
- In a division problem, it's the number being divided
- reflection
- A mirror image of a figure shown over a line of reflection
- pyramid
- A solid figure that has triangles for its sides and a polygon as its base
- scale drawing
- A drawing of an object that is different in size (usually smaller than the original) but keeps the same proportions
- expression
- A combination of numbers and variables connected by one or more operations signs
- range
- The difference between the least and greatest values in a set of numbers
- rate
- A ratio that compares two different types of quantities
- product
- The result of muliplying two or more numbers
- equation
- A mathematical sentence that uses an equal sign
- complementary angle
- Two angles whose sum equals 90 degrees
- obtuse angle
- An angle measuring more than 90 degrees and less than 180 degrees
- percent
- The ratio of a number to 100 (per one hundred); the symbol %