Mathematics, 11.12.2019 00:31 donttrip18

What is the missing reason in the proof?
statements
| 1. ab || cd; bc || da
2. quadrilateral abcd is
ар
3. ab cd; bc - da
reasons
| 1. given
2. definition of parallelogram
4. acac
5. aabc - acda
3. opposite sides of a
parallelogram are
4. reflexive property
115.?

Answers: 1

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What is the missing reason in the proof?
statements
| 1. ab || cd; bc || da
2. q...