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# WLE Geometry Unit 10

### 2 and 3 dimensional shapes

TermDefinition
Base of a cone the flat surface shaped like a circle
Base of a pyramid a face opposite the common vertex (apex) where the triangular faces meet
Bases of a cylinder the two congruent, opposite flat surfaces shaped like circles
Bases of a prism the two congruent, opposite faces that are connected by rectangular faces
Classify applying an attribute to categorize a sorted group
Congruent of equal measure.
Congruent figures figures that are the same size and same shape
Decompose figures to break a geometric figure into two or more smaller geometric figures
Edge where the sides of two faces meet on a three dimensional figure
Face of a prism a polygon that forms a surface of a prism
Irregular figure a polygon with sides and/or corners that are not all congruent
Polygon a closed figure with at least 3 sides, where all sides are straight (no curves)
Properties of three-dimensional figures relationship of attributes within a geometric figure (e.g., a rectangular prism has 6 faces and each pair of opposite faces (bases) are congruent, etc.) and between a group of geometric figures (e.g., a square and a rectangle both have 4 sides and 4 square corners; however, a square has 4 congruent sides but a rectangle has only opposite sides congruent; etc.)
Quadrilateral a polygon with 4 sides and 4 vertices
Regular figure a polygon with all sides and corners congruent
Side a straight outer boundary between two vertices (line segment) of a two-dimensional figure
Sort grouping objects or figures by a shared characteristic or attribute
Three-dimensional figure a figure that has measurements including length, width (depth), and height
Two-dimensional figure a figure with two basic units of measure, usually length and width.
Unit fraction a fraction in the form of 1/b representing the quantity formed by one part of a whole that has been partitioned into b equal parts where b is a non-zero whole number.
Vertez (vertices) in a three dimensional figure the point where three or more edges of a three- dimensional figure meet
Vertex (vertices) in a two-dimensional figure the point (corner where two sides of a two-dimensional figure meet
Created by: bchogue

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