cross product preoperty
dilation
enlargement
geometric mean
if (a/b)=(c/d), then ((a+b)/b)=
if (a/b)=(c/d), then (a/c)=
if a line divides two sides of a triangle proportionally,
if a line parallel to one side of a triangle intersects the othe
if a ray bisects an angel of a triangle
if an angle of one triangle is congruent to an angle of a second
if the lengths of the corresponding sides of two triangles are p
if three parallel lines intersect two transversals
if two angles of one triangle are congruent to two angles of ano
if two polygons are similar,
ratio to a to b
reciprocal property
reduction
rigid transformation
scale factor
similar polygons