vocabulary
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| a number that is being added | addend
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| an angle that measures 90 degrees and forms a square corner | right angle
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| an angle that measures less than 90 degrees | acute angle
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| an angle that measures greater than 90 degrees | obtuse angle
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| a straight path extending in both directions with no end points | line
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| part of a line with two end points and a fixed length | line segment
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| part of a line that has one endpoint and continues in the other direction forever | ray
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| the place where two or more lines, rays, or segments cross | intersection
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| lines that are always the same distance apart an will never meet | parallel lines
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| two lines segments, or rays that intersect to form right angles | perpendicular lines
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| figures with the same size and shape | congruent
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| a triangle that has one 90 degree angle | right triangle
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| a flat shape with 4 or more sides | polygon
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| a polygon with 4 sides | quadrilateral
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| a quadrilateral whose opposite sides are parallel and congruent | parallelogram
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| a parallelogram with 4 equal sides | rhombus
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| a quadrilateral with one pair of parallel sides | trapezoid
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| a polygon with 5 sides | pentagon
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| a polygon with 6 sides | hexagon
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| a polygon with 8 sides | octagon
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| a line that divides a figure into two halves that are mirror images of each other | line of symmetry
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| moving a figure without turning or flipping it (also called a slide) | translation
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| moving a figure to show its mirror image (also called a flip) | reflection
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| moving a figure by turning it around a fixed point (also called a turn) | rotation
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| moving a figure to a new position by slide (translation), flip (reflection), or turn (rotation) | transformation
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| a 3 dimensional shape with length, width, and height | solid figure
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| the line segment where 2 faces of a solid figure meet | edge
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| a flat surface (or plane) that is one side of a solid figure | face
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| a point where lines, rays, sides, or edges meet (also called a corner) | vertex
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| a rectangular solid with 6 congruent square faces | cube
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| a solid figure with a polygon base and triangular sides that meet at a single point | pyramid
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| a solid figure with 2 circular bases that are parallel and congruent | cylinder
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| a solid figure that has a circular base and one vertex | Cone
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| a solid figure that has all points the same distance from the center | sphere
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| any of the counting numbers | whole numbers
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| a number (or any combination of numbers and symbols) that shows a mathematical relationship | expression
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| having the same value | equivalent
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| a math sentence showing that one expression equals another | equation
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| a math sentence that contains a symbol showing that the terms on wither side are unequal | inequality
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| a math equation with numbers | number sentence
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| a set of addition/subtraction or multiplication/division equations that use the same numbers | fact family
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| a situation in which a rule causes each "in value" to have a unique "out value" | function
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| a number that divides evenly into another number | factor
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| the product of a number multiplied by another number | multiple
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| the number found by dividing the sum of a group of numbers by the number of addends | mean
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| the number that occurs most often in a group of numbers | mode
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| the middle number in a list of ordered numbers | median
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| the distance around a figure | perimeter
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| the measure in square units of the inside of a plane fugure | area
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| the amount of space in cubic units that a solid figure can hold | volume
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| a group of items in which the order doesn't matter | combination
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| a rectangular arrangement of objects in equal columns or rows | array
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| a table that uses tally marks to record data | tally chart
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| a graph that uses pictures to show and compare information | pictograph
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| a pair of numbers used to locate a point on a coordinate grid | ordered pair
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| time shown on a clock or watch with hour and minute hands | analog
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Created by:
lshuey
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