**TI83F* AppVariable file 03/27/09, 16:32 GLPA06 nav AEC13267AEFC43F88E67E1C0E88B5B83GLPA06.CGLPA061   congruent #congruent:Having the same measure. constant of proportionalityconstant of proportionality:It is defined as the constant ratio in proportional relationships which is described using equations of the form y = kx, where k is the constant ratio. corresponding partsMcorresponding parts:Parts of congruent or similar figures that match.  cross productscross products:The product of the terms on the diagonals when two ratios are compared.Example: In the proportion 2/3 = 8/12 the cross products are2 12 and 3 8.  dilation ddilation:It is defined as the transformation that enlarges or reduces a figureby a scale factor. dimensional analysisSdimensional analysis:The process of carrying units throughout a computation.  indirect measurementUindirect measurement:A technique using proportions to find a measurement.  inverse proportionhinverse proportion:It is a relationship formed when the product of two variables is a constant.   nonproportionalanonproportional:It is defined for the ratios between two quantities which are not equal.    proportionVproportion:An equation of the form a/b = c/d stating that two ratios are equivalent.   proportionalLproportional:Two quantities are proportional if they have a constant ratio.  ratebrate:The ratio of two measurements having different units of measure.Example: 60 miles per hour  ratio/ratio:A comparison of two numbers by division. scaleVscale:A ratio or rate between the actual size of an object and the size of its model.  scale drawing`scale drawing:A drawing that is similar to an actual object, but is either enlarged or reduced.  scale factor:scale factor:A scale written as a ratio in simplest form.  scale modelgscale model:A replica of an original object that is too large or too small to be built at actual size. similar figures !usimilar figures:Figures that have the same shape but not necessarily the same size. This symbol ~, means similar to.  unit rate*unit rate:A rate with a denominator of 1.9`@@@@@@@@x@p@{HHxHHp%(H! =IG9o%(H!)%p@