Find the cardinal number for the given set. A= {5, 9, 13,...,61} The cardinal number is. ​

x = 115 degrees

Step-by-step explanation:

a triangle we know all angles had up to 180 degrees

for the first triangle we have 65 + 90 = 155 then we do 180 - 155 = 25

so for the small triangle one angle is 25 degrees

now for the other triangle we have 80 + 60 = 140 then 180 - 140 = 40

so now we have all angles except x and to find that we do 25 + 40 = 65 then to find x do 180 - 65 = 115