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Mod 9 Vocab

QuestionAnswer
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.
Circumference The distance around a circle.
Composite Figure A figure that is made up of two or more figures.
Diameter The distance across a circle through its center.
Face A flat surface of a polyhedron.
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.
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=1/2 πr².
Slant Height The height of each lateral face.
Surface Area The sum of the areas of all the surfaces (faces) of a three-dimensional figure.
Volume The number of cubic units needed to fill the space occupied by a solid.
Created by: user-1975231
 

 



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