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Chapter 4 – Triangle Congruence Terms, Postulates and Theorems 4.1 Scalene triangle - A triangle with all three sides having different lengths. Equilateral triangle - All sides of a triangle are congruent. Isosceles triangle - A triangle with at least two sides congruent. • Legs of an isosceles triangle - The congruent sides
Right Triangle Congruence Date_____ Period____ State if the two triangles are congruent. If they are, state how you know. 1) LL 2) HL 3) HA 4) HA 5) HA 6) Not congruent 7) Not congruent 8) LL 9) Not congruent 10) LL-1-
SSS, SAS, ASA, and AAS Congruence Date_____ Period____ State if the two triangles are congruent. If they are, state how you know. 1) Not congruent 2) ASA 3) SSS 4) ASA 5) Not congruent 6) ASA 7) Not congruent 8) SSS 9) SAS 10) SSS-1-
4) ∆WVU ≅ ∆GHI. 6) ∆DEF ≅ ∆DSR. Write a statement that indicates that the triangles in each pair are congruent. 7) ∆JKI ≅ ∆TRS. ©3 a2V0r1M19 3KUuVtmao vSroufktSwkaXrweX 0LmL0Cz.u o 5AMlclB trLijgnh6t5st Prje1sQeArfvdeXda.A 9 uMUaDd0e4 3w6iat4hH qI0n1fZijnjietLeI OGveBocmdeEt9rIyW.u.
Introduction to proofs: Identifying geometry theorems and postulates C congruent ? Explain using geometry concepts and theorems: 1) Why is the triangle isosceles? 2) Why is an altitude? 3) Why are the triangles congruent? 4) Why is NM a median? 5) If ABCD is a parallelogram, why are LA and 6) Why are the triangles congruent?
For each problem, do the following: Show the given information in the diagram (using tick marks to show congruent sides and arcs to show congruent angles) Show any other congruent parts you notice (from vertical angles, sides shared in common, or alternate interior angles with parallel lines)
Congruent Triangles Worksheets. Tags: 9th Grade. If you know the congruency theorems well, you wouldn’t face much trouble in doing these worksheets. They help you determine the dimensions of an unknown triangle provided it is congruent to another triangle whose dimensions are known. Download PDF.
