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4.3 SSS &amp; SAS

# 4.3 SSS &amp; SAS - 4.3 Proving s are SSS and SAS pg...

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4.3 Proving Δs are 2245 : SSS and SAS pg. 212

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Remember? As of yesterday, Δs could only be 2245 if ALL sides AND angles were 2245 NOT ANY MORE!!!! There are two short cuts to add.
Post. 19 Side-Side-Side (SSS) 2245 post If 3 sides of one Δ are 2245 to 3 sides of another Δ, then the Δs are 2245 .

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Meaning: If seg AB 2245 seg ED, seg AC 2245 seg EF & seg BC 2245 seg DF, then ΔABC 2245 ΔEDF. ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ A B C E D F
Given : seg QR 2245 seg UT, RS 2245 TS, QS=10, US=10 Prove : ΔQRS 2245 ΔUTS Q R S T U 10 10

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Proof Statements Reasons 1. 1. given 2. QS=US 2. subst. prop. = 3. Seg QS 2245 seg US 3. Def of 2245 segs. 4. Δ QRS 2245 Δ UTS 4. SSS post
Post. 20 Side-Angle-Side post. (SAS) If 2 sides and the included of one Δ are 2245 to 2 sides and the included of another Δ, then the 2 Δs are 2245 .

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If seg BC 2245 seg YX, seg AC 2245 seg ZX, and C 2245 X, then ΔABC 2245 ΔZXY. B A C X Y Z ) (
Given: seg WX 2245

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