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Congruent and Similar Triangles Notes worksheet - Free Printable

Educational worksheet: Congruent and Similar Triangles Notes worksheet. Download and print for classroom or home learning activities.

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- Congruent Triangles:
- Angles: ∠A ≅ ∠D, ∠B ≅ ∠E, ∠C ≅ ∠F
- Sides: AB ≅ DE, BC ≅ EF, CA ≅ FD
- Words: Triangle ABC is congruent to triangle DEF.
- Example 1: △IJK ≅ △ABC
- Example 2: IK = VX, KJ = XW, JI = WV

- Similar Triangles:
- Angles: ∠A ≅ ∠D, ∠B ≅ ∠E, ∠C ≅ ∠F
- Sides: AB = k·DE, BC = k·EF, CA = k·FD (where k is the scale factor)
- Words: Triangle ABC is similar to triangle DEF.
- Example 1: △KLM ~ △DEF
- Example 2: For △BCD ~ △LMN, the proportion is BC/LM = CD/MN = BD/LN. Given BC=169, LM=26, MN=28, then CD = (169/26)*28 = 182.

Parent Tip: Review the logic above to help your child master the concept of congruent and similar figures worksheet.

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