In figure 1 find the value of x
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45 degree
1. as sum of all angles of tringle is 180 degree.
2. a straight line always form an angle of 180 degree.
so we can find other angles by using 2nd point.
# 180 - 125 = 55 degree
# 180 - 100 = 80 degree
so, x + 55 + 80 = 180
x = 180 - 55 - 80
x = 45 degree.
Hope it will help you.
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