4.3 Δ s. Objectives. Name and label corresponding parts of congruent triangles Identify congruence transformations. Δ s. Triangles that are the same shape and size are congruent. Each triangle has three sides and three angles.
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Corresponding Parts of Congruent Triangles are Congruent
1. QR UT, RS TS,1. Given
2. QS=US 2. Substitution
3. QS US 3. Def of segs.
4. Δ QRS Δ UTS 4. SSS Postulate
1. WX XY; VX ZX 1. Given
2. 1 2 2. Vert s Thm.
3. Δ VXW Δ ZXY 3. SAS Postulate
1. RS RQ; ST QT 1. Given
2. RT RT 2. Reflexive
3. Δ QRT Δ SRT 3. SSS Postulate
Pre-AP: Pg. 195 #9 – 16, 22 – 25 Pg. 204 #14 – 19, 22 – 25