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Topic 12

Geometry

TermDefinition
solid figure a figure that is filled in and has length, width, and height (3 dimensional) solid figures: cube, rectangular prism, cone, cylinder, pyramid, sphere
edge the place where two flat surfaces of a solid figure meet
face the flat surface of a solid figure
flat surface a plane flat surface with no depth
vertex a point where two sides or three or more edges meet vertices = more than one vertex
plane shape a flat 2-dimensional figure plane shapes = square, rectangle, triangle, circle
rectangle a plane shape with two sets of opposite sides that are the same length
square a plane shape with all four sides the same length
triangle a plane shape with three sides
polygon a plane shape with three or more sides
hexagon a plane shape that has six sides
parallelogram a plane shape that has four sides the opposite sides are parallel
parallel lines two lines that never cross or meet
side a line segment that makes one part of a plane shape
quadrilateral all polygons that have four sides square, rectangle, trapezoid, parallelogram
angle two rays with the same end point; that endpoint is the vertex of the angle
pentagon a polygon with five sides
row a horizontal line of objects; line that goes from left to right
column a vertical line of objects; line that goes from top to bottom
equal to have the same amount, size, number, or value
halves when one whole is divided into two equal parts
fourths when one whole is divided into four equal parts
thirds when one whole is divided into three equal parts
unequal parts that are not equal
Created by: ShelleyQ
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