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# gr. 5 PSSA Vocab

an angle that measures 90 degrees right angle
an angle that measures less than 90 degrees acute angle
an angle that measures greater than 90 degrees obtuse angle
a straight path extending in both directions with no end points line
part of a line with 2 end points and a fixed length line segment
part of a line that has one endpoint and continues in the other direction forever ray
the place where two or more lines, line segments, or rays cross intersection
lines that are always the same distance apart and never intersect parallel
two lines, line segments, or rays that intersect to form right angles perpendicular
a flat surface that extends in all directions plane
figures with the same size and shape congruent
figures with the same shape, but not necessarily the same size similar
a triangle that has one 90 degree angle right triangle
a flat figure with 4 or more straight sides that is closed polygon
a polygon with 4 sides quadrilateral
a quadrilateral whose opposite sides are parallel and congruent parallelogram
a parallelogram with 4 equal sides rhombus
a quadrilateral with one set of parallel sides trapezoid
a polygon with 5 sides pentagon
a polygon with 6 sides hexagon
a polygon with 8 sides octagon
a line that divides a figure into 2 halves that are mirror images of each other line of symmetry
moving a figure without turning or flipping it (also called a slide) translation
moving a figure to show its mirror image (also called a flip) reflection
moving a figure to a new position by slide, flip, or turn transformation
moving a figure by turning it around a fixed point rotation
a three-dimensional shape with length, width, and height solid figure
the line segment where 2 faces of a solid figure meet edge
a flat surface that is one side of a solid figure face
a point where lines, rays, sides, or edges meet vertex
a rectangular solid with six congruent square faces cube
a solid figure with a polygon base and triangular sides that meet at a single point pyramid
a solid figure with 2 circular bases that are parallel and congruent cylinder
a solid figure that has a circular base and one vertex cone
a solid figure that has all points the same distance from the center (like a ball) sphere
any of the counting numbers whole number
a number or any combination of numbers and symbols that shows a mathematical relationship without an equal sign or answer expression
having the same value equivalent
a math sentence showing that one expression equals another equation
a math sentence that contains a symbol showing that the terms on either side are unequal inequality
a math equation with numbers number sentence
a set of addition/subtraction or multiplication/division equations that use the same numbers fact family
a situation in which a rule causes each "in value" to have a unique "out value" function
a whole number that has only two factors: 1 and itself prime number
a whole number that has more than two factors composite number
a number that divides evenly into another number factor
the product of a number multiplied by another number multiple
the smallest number (other than 0) that is a common multiple of two or more numbers least common multiple
a way to write numbers that shows the value of each digit expanded notation
the number found by dividing the sum of a group of numbers by the number of addends mean
the number that occurs most often in a set of data mode
the middle number in a list of ordered numbers median
the difference between the biggest and smallest numbers in a group range
the distance around a figure perimeter
the distance around a circle circumference
the measure in square units of the inside of a plane figure area
the amount of space in cubic units that a solid figure can hold volume
a group of items in which the order doesn't matter combinations
a rectangular arrangement of objects in equal rows and columns array
a table that uses tally marks to record data tally chart
a graph that uses pictures to show and compare information pictograph
a pair of numbers used to locate a point on a grid ordered pair
time shown on a clock or watch with hour and minute hands analog
Created by: wkmurray