Respuesta :

21swainsham
18.
a. 40 degrees
b. 50 degrees
c. 90 degrees

19.
p. 75 degrees
q. 90 degrees
r. 15 degrees

20. 
a. 45 degrees
b. 90 degrees
c. 45 degrees

21.
idk sorry but i hope i helped with the others 


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