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Andrej [43]
3 years ago
11

PLEASE HELP ASAP I WILL GIVE 35 POINTS !!!

Mathematics
1 answer:
goblinko [34]3 years ago
6 0

Answer:

Postulates and definitions

Step-by-step explanation:

a. given

b. definition of supplementary angles

c. angle addition postulate

d. substitution

e. angle addition postulate  

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