Similar triangles: proportions
 Two figures that have the same shape are similar∆ABC is similar to ∆DEF ∡A≅∡Similar figures have CONGRUENT angles∆ABC is similar to ∆DEF∡B≅∡∡C≅∡                        In similar figures,corresponding (matching) sides are proportional63=10?? Complete the statement of proportionality121224?8=101020?=241616?820 ∆ABC is similar to ∆EFGAABEF?=BCBCFG?E=ACEG?FG (enter each 2 segment letters in alphabetical order)∆ABC is similar to ∆EFGAAB=BCBCU=ACVW These ∆s are similar, which meansthey have proportional sides12x129=x6G These ∆s are similar, which meansthey have proportional sides12x129=96x =x6G ADBECSegment DE  is parallelto segment AC AD◄◄BECThe parallel linesform corresponding ∡s∡BDE   ≅ ∡∡BED  ≅ ∡(One-letter angles) A∆ABC is similar to ∆DBECSegment DE  is parallelto segment ACSince the ∆s have2 correspondingcongruent angles,they are SIMILAR. A∆ABC is similar to ∆ DBEDBECSegment DE  is parallelto segment AC
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