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40  x 4x – 20  Solve. Warm up 1. 2y + 28  3y – 14° 2. 42 

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Presentation on theme: "40  x 4x – 20  Solve. Warm up 1. 2y + 28  3y – 14° 2. 42 "— Presentation transcript:

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2 40  x 4x – 20  Solve. Warm up 1. 2y + 28  3y – 14° 

3 Congruent triangles have 3 congruent sides and 3 congruent angles. The parts of congruent triangles that “match” are called corresponding parts.

4 In a congruence statement ORDER MATTERS!!!! Everything matches up.

5 Corresponding Parts of Congruent Triangles are Congruent

6 Complete each congruence statement. C A E D B F If  ABC   DEF, then BC  ___ EF

7 Complete each congruence statement. C A E D B F If  ABC   DEF, then  A  ___ DD

8 Complete each congruence statement. C A E D B F If  ABC   DEF, then  C  ___ FF

9 Fill in the blanks If  CAT   DOG, then AC  ___ OD

10 Fill in the blanks  BAT   MON  T  ___ _____   ONM _____  MO NM  ____ NN  ATB BA TB

11 Fill in the blanks  BCA   ____  ____   GFE EGF CAB

12 Complete the congruence statement.  _____   JKN MKL

13 Complete the congruence statement.  _____   CBD ABD

14 There are 5 ways to prove triangles congruent.

15 Side-Side-Side (SSS) Congruence Postulate All Three sides in one triangle are congruent to all three sides in the other triangle

16 Side-Angle-Side (SAS) Congruence Postulate Two sides and the INCLUDED angle (the angle is in between the 2 marked sides)

17 Angle-Angle-Side (AAS) Congruence Postulate Two Angles and One Side that is NOT included

18 Angle-Side-Angle (ASA) Congruence Postulate Two angles and the INCLUDED side (the side is in between the 2 marked angles)

19 There is one more way to prove triangles congruent, but it’s only for RIGHT TRIANGLES…Hypotenuse Leg

20 Your Only Ways To Prove Triangles Are Congruent NO BAD WORDS

21 2 markings you can add if they aren’t marked already

22 Share a side Reason: reflexive property Vertical Angles Reason: Vertical Angles are congruent


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