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Y. Z. 2. 12. Prove: XY @ ZW, YZ @ XW. 1. 4. Given: XY||ZW, YZ||XW. 3. X. W. B. D. 20. Prove: AB @ DE. C. 1. 2. Given: AB||DE, C is the midpoint of BE. A. E. B. D. 21. Prove: AB || DE. C. Given: / ABC @ / DEC. A. E. B. D. 22. Prove: C is midpoint of BE. C.
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Y Z 2 12. Prove: XY @ ZW, YZ @ XW 1 4 Given: XY||ZW, YZ||XW 3 X W
B D 20. Prove: AB @ DE C 1 2 Given: AB||DE, C is the midpoint of BE A E
B D 21. Prove: AB || DE C Given: /\ ABC @/\ DEC A E
B D 22. Prove: C is midpoint of BE C 1 2 Given: <A @ <D, AB @ DE A E
B E 23. Prove: <B @ <E Given: <A @ <D, AB @ DE, AF @ DC A F C D
B 24. Prove: /\BDE is isosceles Given: AB @ CB, AD @ CE A C D E