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19. Using the given angle in the figure below, what is the measure of 27?
A. 65
B.85
C. 125
D. 115
20. What is the measure of the unknown exterior angle of the polygon at the right?
A. 50° B. 70° C. 60° D. 80°​


Sagot :

Answer:

Metals Metal Ion Reactivity

K K+ reacts with water

Na Na+ reacts with water

Li Li+ reacts with

Step-by-step explanation:

1-B

2-A