Question | Answer |
An angle with a measure less than 90°. | Acute angle |
Any number that is being added. | Addend |
Time displayed on a timepiece having hour and minute hands. | Analog time |
The measure, in square units, of the inside of a plane figure. | Area |
A rectangular arrangement of objects in equal rows or columns. | Array |
A group of items. Placing these items in a different order does not create a new combination. | Combination |
A solid figure that has a circular base and one vertex. | Cone |
Having the same size and shape.Congruent angles have the same measure.Congruent segments have the same length. | Congruent |
A rectangular solid having six congruent square faces. | Cube |
A three-dimensional figure with two circular bases, which are parallel and congruent. | Cylinder |
The line segment where two faces of a solid figure meet. | Edge |
Having the same value. | Equivalent |
A variable, or any combination of numbers, variables, and symbols that represents a mathematical relationship (e.g., 24 x 2 + 5 or 4a – 9). | Expression |
A plane figure that serves as one side of a solid figure. | Face |
A set of related addition and subtraction, or multiplication and division equations using the same numbers (e.g., 6+9=15, 15-9=6, 9+6=15, 15-6=9). | Fact family |
A whole number that divides evenly into another whole number (e.g., 1, 3, 5, and 15 are factors of 15). | Factor |
A relation in which every input value has a unique output value. | Function |
A polygon with 6 sides. | Hexagon |
A mathematical sentence that contains a symbol that shows the terms on either side of the symbol are unequal (e.g., 3+4>6). | Inequality |
A straight path extending in both directions with no endpoints. | Line |
A line that divides a figure into two halves that are mirror images of each other. | Line of symmetry |
A part of a line with two endpoints. | Line segment |
The number found by dividing the sum of a set of numbers by the number of addends. | Mean (average) |
The middle number in an ordered set of data, or the average of the two middle numbers when the set has two middle numbers. | Median |
The number(s) that occurs most often in a set of data. | Mode |
The product of a given whole number and another whole number (e.g., multiples of 4 are 4, 8, 12, 16….). | Multiples |
An equation or inequality with numbers. | Number sentence |
An angle with a measure more than 90º. | Obtuse angle |
A polygon with 8 sides. | Octagon |
A pair of numbers used to locate a point on a coordinate grid. The first number tells how far to move horizontally, and the second number tells how far to move vertically. | Ordered pair |
Lines that never intersect and are always the same distance apart. | Parallel lines |
A quadrilateral whose opposite sides are parallel and congruent. | Parallelogram |
A polygon with 5 sides. | Pentagon |
The distance around a figure. | Perimeter |
Two lines, segments or rays that intersect to form right angles. | Perpendicular lines |
A graph that uses pictures to show and compare information. | Pictograph |
A solid figure with a polygon base and triangular sides that meet at a single point (vertex). | Pyramid |
A polygon with 4 sides. | Quadrilateral |
A part of a line that has one endpoint and continues without end in one direction. | Ray |
A solid figure in which all six faces are rectangles. | Rectangular prism |
A transformation that produces the mirror image of a figure. | Reflection (flip) |
A parallelogram with four equal sides. | Rhombus |
An angle that measures exactly 90º. | Right angle |
A triangle that has a 90º angle. | Right triangle |
A movement of a figure that turns that figure around a fixed point. | Rotation (turn) |
A solid figure that has all points the same distance from the center. | Sphere |
A table that uses tally marks to record data. | Tally chart |
A movement of a figure to a new position without turning or flipping it. | Translation (slide) |
A quadrilateral with exactly one pair of parallel sides. | Trapezoid |
A point where lines, rays, sides of a polygon or edges of a polyhedron meet (corner). | Vertex |
The amount of space (in cubic units) that a solid figure can hold. | Volume (capacity) |
A statement that two mathematical expressions are equal. | Equation |