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Math Vocab Geo/Graph

March 16-27

acute angle An angle whose measure is less than 90 degrees.
angle Two rays that have the same endpoint.
average The number found by adding all the data and dividing by the number of data. Also called the mean.
bar graph A graph that uses bars to show data.
circle graph A graph in the shape of a circle that shows what part of the whole each portion of the data represents.
cone A solid with one circular base, the points on the circle are joined to one point outside the base.
congruent figures Figures that have the same size and shape.
cylinder A solid figure with two circular bases that are congruent and parallel.
data Collected information.
expanded form A way to write a number that shows the place value of each digit.
hexagon A polygon with 6 sides.
intersecting lines Lines that pass through the same point.
isosceles triangle A triangle with at least two sides of the same length.
line A set of points that goes on forever in two directions.
line graph A graph that connects points to show how data change over time.
line of symmetry The fold line in a symmetric figure
line segment Part of a line having two endpoints
mean The number found by adding all the data and dividing by the number of data. Often called the average.
median The middle number in an ordered set of data.
mode The data value that occurs most often in a set of data.
obtuse angle An angle whose measure is between 90 degrees and 180 degrees.
octagon A polygon with 8 sides
parallel lines Lines that never cross and are the same distance apart.
parallelogram A quadrilateral with both pairs of opposite sides parallel.
pentagon A polygon with 5 sides
perpendicular lines Two lines that intersect to form right angles.
pictograph A chart using pictures or symbols to compare data that can be counted.
plane An endless flat surface.
polygon A closed plane figure made up of line segments
pyramid A solid figure with a base that is a polygon and whose faces are triangles with a common vertex.
quadrilateral A polygon with 4 sides.
ray Part of a line that has one endpoint and extends forever in only one direction
rectangle A parallelogram with 4 right angles.
rhombus A parallelogram with all sides the same length
right angle An angle whose measure is 90 degrees.
sphere A solid figure with all points the same distance from the center point.
square A rectangle with all sides the same length.
trapezoid A quadrilateral that has exactly one pair of parallel sides.
triangle A polygon with 3 sides
Created by: cdixon