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19. Given: AB = AC; AL and AM trisect ZBAC. (This means 21 = Z 2 = 23.) L M 45 67 Prove: AL = AM 20. Given: L4 = 27; L1 = Z3 Prove: AABC is isosceles. A

19. Given: AB = AC; AL and AM trisect ZBAC. (This means 21 = Z 2 = 23.) L M 45 67 Prove: AL = AM 20. Given: L4 = 27; L1 = Z3 Prove: AABC is isosceles. A

Elementary Geometry For College Students, 7e
Elementary Geometry For College Students, 7e
7th Edition
ISBN:9781337614085
Author:Alexander, Daniel C.; Koeberlein, Geralyn M.
Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.
ChapterP: Preliminary Concepts
SectionP.CT: Test
Problem 1CT
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19. Given: AB = AC; AL and AM trisect ZBAC. (This means 21 = Z 2 = 23.) L M 45 67 Prove: AL = AM 20. Given: L4 = 27; L1 = Z3 Prove: AABC is isosceles. A
Transcribed Image Text:19. Given: AB = AC; AL and AM trisect ZBAC. (This means 21 = Z 2 = 23.) L M 45 67 Prove: AL = AM 20. Given: L4 = 27; L1 = Z3 Prove: AABC is isosceles. A
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