'Necessarily congruent' presentation slideshows

Addition & Subtraction Properties

Addition & Subtraction Properties. Lesson 2.5. 3 cm. 7 cm. 7 cm. A. B. C. D. In the diagram above, AB = CD. Do you think that AC = BD? Suppose that BC were 3cm. Would AC = BD? If AB = CD, does the length of BC have any effect on whether AC = BD?. Yes. Yes. No. Theorem 8:.

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2.5 Addition and Subtraction Properties

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N#____ ____/____/____ 4-4 Part1 Proving Triangles Congruent SSS and SAS

N#____ ____/____/____ 4-4 Part1 Proving Triangles Congruent SSS and SAS. The definition of congruent triangles states that you need 6 pairs of congruent corresponding parts to prove triangles congruent. In reality, you only need certain pairs of congruent corresponding parts. C. Y.

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