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Measurement & Geo
Vocabulary for Measurement and Geometry Unit Grade 7
| Term | Definition |
|---|---|
| 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. |