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SAME SHAPE-- corresponding-angles are same size-congruent SIMILAR FIGURES SIDES--corresponding--form a proportion ∆CDG∿∆ART symbol for similar C turn the same way so corresponding angles & sides match up D G ∆CDG∿∆ART A R T C angles match up D G ∆CDG∿∆ART A R T corresponding sides match up C D G ∆CDG∿∆ART A R T B BN NH N BH H ∆BNH∿∆GEF G ? E ? F ? ⊾B ⊾N ⊾H ⊾ ⊾ ⊾ SIMILAR FIGURES A C D B trapezoid ADBC∿trapezoid RKLA R ? A ? AD = BD L ? K ? = CB = AC SIMILAR FIGURES ∆YBQ∿∆LGT ⊾Y BQ ⊾Q ⊾GT ? ⊾T ? ⊾L ? QY BY ⊾B TL ? LG ? ⊾G ? SIMILAR FIGURES--turn em the same match up the angles E T CB ? ET = WE AC ? = W WT AB ? A ∆TEW∿∆ C B SIMILAR FIGURES--turn em the same match up the angles E T B ? C ? A ? W A DRAW IT TURNED C B SIMILAR FIGURES--turn em the same match up the angles E T B 5 C 10 45 A W 5 ET ET= = NO ROUNDING 45 10 SIMILAR FIGURES--turn em the same match up the angles E T B C A W ⊾E=20 ⊾A= 60 W Y 25 30 SIMILAR FIGURES T 45 R C A AB 60 = D 5 30 AB= 5 B 60 W Y 25 30 SIMILAR FIGURES T 45 R C A AC 25 = D 5 30 AC= 5 B 60 W Y 25 30 SIMILAR FIGURES T 45 R C A CD 45 = D 5 30 CD= 5 B exact W Y 60 SIMILAR FIGURES T R C A ⊾R= angles in a quadrilateral add up to 3600 ⊾B= D B A F ⊾F=350 ⊾K=830 H SIMILAR FIGURES ⊾H-->⊾ ⊾F-->⊾ ⊾A= ⊾R-->⊾ ⊾M= K R M |