31 terms

How can you define a shape? How do we use shapes to compose new shapes?

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rectangle
a polygon with four sides and opposite equal sides
square
polygon with four sides and all sides equal in
length
trapezoid
polygon with four sides and exactly one set of parallel sides
triangle
polygon with three sides and three angles
attribute
characteristic of a shape
circle
a round shape that has no beginning or end
half-circle
half of a circle
quarter-circle
1/4 of a circle
apex
The point furthest from the base of an object.
cylinder
A three-dimensional figure with two parallel and congruent circles as bases, one curved surface, two curved edges, and no vertices
cone
A three-dimensional figure with one curved surface, one flat surface (usually circular), one curved edge, and one apex ( special vertex that is only located at the top of a cone or pyramid).
rectangular prism
A prism with six rectangular faces.
prism
A three-dimensional figure that has two congruent and parallel faces that are polygons. The remaining faces are parallelograms.
face
A plane figure that serves as one side of a solid figure
plane
A plane figure. If the solid is a cylinder or prism, there are two bases that are parallel and congruent.
vertex
The point at which two line segments,
lines, or rays meet to form an angle.
angle
where two lines meet
closed figure
a shape that begins and ends at the same point
open figure
a shape that has an opening
compose
to make by combining
cube
A regular solid having six equal square faces.
edge
The line segment where two faces of a solid figure meet.
feature
characteristic
half
one of two equal parts
side
A line segment connected to other segments to form a polygon.
solid
A three-dimensional (3D) shape
two-dimensional (2D)
a flat shape
three-dimensional (3D)
having length, depth and height
hexagon
6 sided figure
octagon
8 sided figure
sphere
ball
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