Here are the correct definitions matched to the answer choices you provided:
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A figure in the plane has this if the figure can be mapped onto itself by a rotation of 180 degrees or less. What is it?
Answer: rotation symmetry -
A type of composite or combination transformation of a reflection over a line followed by a translation or vice versa. What is it?
Answer: reflection -
The operation that maps, or moves, a preimage onto an image. What is it?
Answer: transformation -
A line that a figure in the plane has if the figure can be mapped onto itself by a reflection in the line. What is it?
Answer: line of symmetry -
Also known as the angle of rotation; the measure of degrees that a figure is rotated about a fixed point. What is it?
Answer: degree of rotation -
A type of transformation that maps every 2 point P and Q in the plane to points P' and Q' so that PP'=QQ', PP' is parallel to QQ', or PP' and QQ' are collinear. What is it?
Answer: translation -
A transformation that preserves lengths; aka rigid transformation. What is it?
Answer: isometry -
A type of transformation in which a figure is turned about a fixed point. What is it?
Answer: rotation -
Motion that proceeds in the same direction as the hands of a clock, from top right, down, then left, back to the top; in math, it is in the negative degree direction. What is it?
Answer: clockwise -
A dilation transformation in which the scale factor is more than 1 which causes the image to be larger, stretched, or expanded, yet is similar (same shape, different size) to the original preimage. What is it?
Answer: enlargement/expansion -
The new figure that results from the transformation of a figure in a plane. What is it?
Answer: image -
A dilation with a scale factor less than 1 which reduces the size of the original figure. What is it?
Answer: shrink -
A line that acts as a mirror and reflects an image for a transformation. What is it?
Answer: line of reflection -
The original figure in the transformation of a figure in a plane. What is it?
Answer: pre image -
A type of transformation, with center C and scale factor k, that maps every point P in the plane to a point P'. What is it?
Answer: dilation -
The k or the multiplier of a dilation. What is it?
Answer: scale factor