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# Measurement & Geo

### Vocabulary for Measurement and Geometry Unit Grade 7

TermDefinition
Area The measure of the amount space contained inside a two dimensional figure; measured in square units.
Bases The unique faces of three dimensional figures; for prisms they are congruent and parallel.
Chord The distance from a point on the outside of a circle to another point on the outside of the circle without passing through the center.
Circle All the points in a plane that are equidistant from a common point called the center.
Circumference The measure of the distance around a circle.
Composite Figure Any 2d or 3D figure that is composed of different shapes or solids.
Cross Sections The two dimensional figures formed by slicing through a solid.
Cylinder A solid with two circular bases that are congruent and parallel.
Cone A solid with one circular base.
Diameter The distance from the outside of a circle, through the center, to another point on the outside of the circle.
Edges The lines in which the faces of a polyhedron meet.
Faces The two dimensional figures that create three dimensional figures and meet at their edges.
Lateral Surface Area The surface area of a solid, excluding the bases.
Net The two dimensional representation of a solid.
Perimeter The measure of the total distance around a two dimensional figure.
Pi The ratio of a circle's circumference to its diameter.
Polyhedron A solid whose faces are polygons.
Prism A that has two unique congruent bases that are parallel with the rest of the faces being rectangles.
Pyramid A solid that has one unique base with the rest of the faces being triangles that meet at one point.
Radius The distance from the center to the outside of a circle.
Solid Any three dimensional figure.
Surface Area The measure of the two dimensional space that covers a three dimensional figure.
Vertices The points in which the edges of solids meet.
Volume The measure of the amount of space contained inside a three dimensional figure.
Created by: EYLERD110