[color=#980000]Congruent Angle Pairs[/color][br] Angle-Angle Similarity: if two triangles have two pairs of congruent angles, then the triangles are similar because all three angles will have congruent angle pairs. [b][color=#980000]AA[br][/color][/b][color=#0000ff]Proportional Sides[/color][br] If every side of a figure is proportional to one, unique side of another figure, then the figures are similar. All sides of similar figures are proportional. [b][color=#0000ff]SSS proportionality[/color][/b]