Download Congruence When two figures have the exact same size and shape

Congruence
When two figures have the
exact same size and shape
Plane
A two dimensional figure,
length and width
Line Symmetry
When a figure can be cut or
folded in a way that the
figures on either side of the
line are mirror images
Line of Symmetry
The fold, cut, or line on
which symmetry exists
Similar
When figures are the same
shape but different sizes
(proportions of sides and
angles remains the same
even though he figure may
grow or shrink)
Straight, continues forever in
both directions
Line
Line Segment
Straight with a fixed length,
two endpoints
Ray
Begins at one endpoint and
continues in the other
direction forever
Angle
When two rays are
connected by a common
endpoint
Vertex
The endpoint in which two
rays have in common to
create an angle
Right Angle
A 90 degree angle (a corner)
Perpendicular
When two lines intersect to
create right angles
Parallel
When two lines will never
intersect, they remain an
equal distance apart
Properties of Quadrilaterals
Polygon
Closed figure (no gaps) with at
least three sides, no curved sides
Quadrilateral
A four sided polygon
Trapezoid
Figure with one set of parallel
lines
Isosceles Trapezoid
Figure with one set of parallel
lines and one set of congruent
lines
Parallelogram
Figure in which all opposite sides
are parallel
Rhombus
Quadrilateral with four
congruent sides
Rectangle
Quadrilateral in which opposite
sides are congruent and parallel,
four right angles
Square
Quadrilateral with four
congruent sides and four right
angles