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Mod 12 Vocab

TermDefinition
area the measure of the interior of a 2D 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
circumference the distance around a circle
composite figure a figure that is made up of 2 or more shapes
composite solid an object made up of 2 or more soilds
cone a 3D figure with one circular base connected by a curved surface to a single point
cylinder a 3D figure with 2 parallel congruent circular bases connected by a curved surface
diameter the distance across a circle through its center
face a flat surface of a polyhedron
hemisphere one of 2 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 or 22/7
prism a polyhedron with 2 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=1/2πr²
slant height the height of each lateral face
sphere the set of all 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 3D figure
volume the measure of the space occupied by a solid. standard units of measure are cubic units such as in cubed or ft cubed
Created by: user-1982156
 

 



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