Vocab
figures that have the same size and shape.
Congruent Figures
a special type of transformation that preserves the size and shape of the figure
Rigid Motion
a line that acts as a mirror so that corresponding points are the same distance from the line
Line of Reflection
The point from which a dilation is generated
Center of Dilation
a line that intersects two or more lines
Transversal
sides that have the same relative positions in geometric figures
Corresponding Sides
the original figure in a transformation
Pre-image
a rigid motion transformation that turns a figure on a plane about a fixed point, called the center of rotation, through a given angle.
Rotation
in a dilation, the ratio of the distance of the new figure from the center of dilation to the distance of the original figure from the center of dilation
Scale Factor
angles between 2 lines and on opposite sides of a transversal
Alternate Interior Angles
angles that have the same relative positions in geometric figures
Corresponding Angles
the new figure created from a transformation
Image
the point around which a figure is rotated.
Center of Rotation
When the scale factor is greater than 1
Enlargement
Angles that lie outside a pair of lines and on opposite sides of a transversal.
Alternate Exterior Angles
It is a flat surface. It has infinite length and width, but no depth. It extends infinitely in all directions in two dimensions. They are determined by three points, but usually named using one uppercase letter.
Plane
is a rigid motion transformation that "slides" each point of a figure the same distance and direction
Translation
the amount of rotation, in degrees, about a fixed point, the center of rotation
Angle of Rotation
when the scale factor is between 0 and 1
Reduction
The two angles that are inside (interior) the parallel lines and are on the same side of the transversal Are SUPPLEMENTARY (add up to 180 degrees)
Same Side Interior Angles
the mapping, or movement, of a plane and all the points of a figure on a plane according to a common action or operation
Transformation
a rigid motion transformation that "flips" a figure across a line of reflection
Reflection
a transformation that produces a figure that is the same shape as the original figure, but not necessarily the same size
Dilation
two figures have this relationship when the ratios of their corresponding side lengths are equal
Similar
displays categorical data that shows the number of data points that fall into each group of two variable. one variable is divided into rows, and the others is divided into columns
two-way table