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Unit 5: Area and Volume
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Terms in this set (35)
2-Dimensional
A shape that only has two dimensions (such as width and height) and no thickness
3-Dimensional
An object that has height, width and depth (thickness), like any object in the real world.
Area
The number of square units it takes to completely fill a space or surface.
Bases of a Prism
The two faces formed by congruent polygons that lie in parallel planes, all of the other faces being parallelograms.
Composing
Composing is putting two or more geometric figures.
Cubic Units
Volume of the solids is measured in Cubic Units.
Dimension
a measure of spatial length; a linear measurement
Decomposing
subdividing a polygon
Edge
The intersection of a pair of faces in a three-dimensional figure.
Equilateral Triangle
A triangle which has all three of its sides equal in length.
Face
One of the polygons that makes up a polyhedron.
Fractional edge length
The length of each edge of the cube is a fraction.
Isosceles Triangle
A triangle which has two of its sides equal in length.
Kite
A quadrilateral with two distinct pairs of equal adjacent sides. A kite-shaped figure.
Lateral Faces
In a prism, a face that is not a base of the figure.
Net
A two-dimensional figure that, when folded, forms the surfaces of a three dimensional object.
Parallelogram
A quadrilateral with both pairs of opposite sides parallel.
Polygon
A number of line segments, each connected end to end to form a closed shape.
Polyhedron
A 3-dimensional figure that has polygons as faces.
Prism
A polyhedron with two parallel and congruent faces, called bases, and all other faces that are parallelograms.
Quadrilaterals
Four coplanar line segments linked end to end to create a closed figure. A 4-sided polygon.
Rectangle
A 4-sided polygon where all interior angles are 90°.
Rectangular prism
A solid (3-dimensional) object which has six faces that are rectangles.
Rhombus
A quadrilateral with all four sides equal in length.
Right Triangle
A triangle where one of its interior angles is a right angle (90 degrees).
Right rectangular prism
In a right prism, the lateral faces are each perpendicular to the bases.
Scalene Triangle
A triangle where all three sides are different in length.
Square
A quadrilateral that has four right angles and four equal sides.
Surface area
The total area of the 2-dimensional surfaces that make up a 3-dimensional object.
Trapezoid
A quadrilateral which has at least one pair of parallel sides.
Triangles
A closed figure consisting of three line segments linked end-to-end. A 3-sided polygon
Triangular prism
A prism whose bases are triangles. A solid (3-dimensional object what has five faces: three rectangles and two bases.
Vertices
The common endpoint of two or more rays or line segments
Volume
The amount of space occupied by an object.
Volume of a Prism
The area of a base times the height. The number of cubic units to fill a prism.
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