Geometry Terms - chapter 7 Flashcards
dilation
a transformation in which the lines connecting every point P with its preimage P’ all intersect at a point C, known as the center of dilation, and (CP’)/(CP) is the same for every point P
directed line segment
a segment between two points A and B with a specified direction, from A to B and from B to A
indirect measurement
a method of measurement that uses formulas, similar figures, and/or proportions
scale
the ratio between two corresponding measurements
scale drawing
a drawing that uses a scale to represent an object as smaller or larger than the actual object
scale factor
the multiplier used on each dimension to change one figure into a similar figure
similar
two figures that have the same shape, but not necessarily the same size
similar polygons
two polygons whose corresponding angles are congruent and whose corresponding side lengths are proportional
similarity ratio
the ratio of two corresponding linear measurements in a pair of similar figures
similarity transformation
a transformation that produces similar figures
