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Chapter 3 review

Solve for x. X = 19 X = 22. Chapter 3 review. If ëLMN ¤ ëQRS, find: m<L LM m<S QS RS m<M. Warm-up. 4-2 & 4-3 Proving Triangles Congruent. Ways to Prove Parts Congruent. Angles 1. Vertical Angles ≅ (bow tie) 2. Angle Bisector

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Chapter 3 review

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  1. Solve for x. X = 19 X = 22 Chapter 3 review

  2. If ëLMN ¤ ëQRS, find: m<L LM m<S QS RS m<M Warm-up

  3. 4-2 & 4-3 Proving Triangles Congruent

  4. Ways to Prove Parts Congruent Angles 1. Vertical Angles ≅ (bow tie) 2. Angle Bisector 3. Given parallel lines, alternate interior angles ≅ 4. All right angles ≅ Sides 1. Midpoint 2. Bisector 3. Isosceles triangle 4. Reflexive/Symmetric Property (share a side)

  5. Ways to Prove Congruent Triangles

  6. Handout on congruence statements Show alternate interior angle transparency. Followed by mark the picture handout. Notes for me…. Use Document Camera!!

  7. Examples Name…. • An angle included between sides AT and AC • The side opposite <T • The side included between <C and <T

  8. Examples: Stop after these Can you prove triangles are congruent? By which method? Write a congruence statement as well.

  9. Chapter 3 Review Solve for x. X = 158 X = 5

  10. Steps to do a proof • Fill in given and prove line • Look at given, any words? bisect, midpoint, parallel, perpendicular, isosceles triangle. • No more words, look at picture share a side or bow tie 4) Once you have 3 parts congruent, triangle congruent (SSS, SAS, ASA, AAS)

  11. Statement Reason 1 2 3 4 Proofs

  12. Statement Reason 1 2 3 4 Proofs

  13. Statement Reason 1 2 3 4 5 Proofs

  14. Statement Reason 1 2 3 4 5 Proofs

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