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Mod 12 Vocab

TermDefinition
area the measure of the interior surface of a two dimensional figure
center the point from which all points on a circle are the same distance
circle the set of all points in a plane that are the same distance from a given point called the center
circumfrance the distance around a circle
composite figure a figure that is made up of two or more figures
composite solid an object made up of more than one solid
cone a three-dimensional figure with one circular base connected by a curved surface to a single point
cylinder a three-dimensional figure with two parallel congruent circular bases connected by a curved surface
diameter the distance across its circle through its center
face a flat surface of a polyhedron
hemisphere one of two congruent halves of a sphere
lateral face in a polyhedron, a face that is not a base
pi the ratio of the circumference of a circle to its diameter the Greek letter π represents this number the value of pi is 3.1415926... Approximations for pi are 3.14 and 22/7 pi goes on for forever
prism a polyhedron with two parallel congruent faces called bases
pyramid a polyhedron with one base that is a polygon and three or more triangular faces that meet at a common vertex
radius the distance from the center of a circle to any point on the circle
regular pyramid a pyramid whose base is a regular polygon and in which the segment from the vertex to the center of the base is the altitude
semicircle half of a circle the formula for the area of a semicircle is A = 1/2π r^2
slant height the height of each lateral face
sphere the set of all given points in space that are a given distance from a given point called the center
surface area the sum of the areas of all the surfaces (faces) of a three-dimensional figure
volume the measure of the space occupied by a solid standard units of measure are cubic units such as in in^3 or ft^3
Created by: user-1981846
 

 



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