VOCABULARY
Chapter 12
Basic Geometry
VOCABULARY
DEFINITION
circle
a closed round figure
cone
a round 3-dimensional figure that
narrows to a point
Corner/vertex
the point where lines, edges, or sides of
a shape meet; also called a vertex
EXAMPLE
A square has 4 corners or
vertices.
cube
a square block
cylinder
a solid figure shaped like a can
face
the flat part of a 3-dimensional figure
A square is a face of a cube.
position
tells where an object is
The triangle is above the circle.
pyramid
a solid figure with a polygon as a base
and triangular shaped faces.
rectangle
a shape with four sides and four
corners; opposite sides have the same
length
rectangular prism
a 3-dimensional shape
side
one of the lines that make up a shape
sphere
a solid shape that has the shape of a
round ball
square
a shape with 4 equal sides
triangle
a shape with three sides
A square has four sides.
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We will also be learning about polygons, quadrilaterals, hexagons, pentagons, octagons,
Carroll diagrams, and Venn diagrams.