Answer: x =47
Step-by-step explanation:
Let`s find 1:
y= 1 angle
In a triangle the sum of the angles is 180 º, so you sum
66+21+y = 180
y= 180 - 66 - 21
y= 180-87
y= 93
Let`s find x:
the angle that is not written in the triangle where x is, is opposite by vertex to angle 1 or y, that is, they have the same value, so:
x + 40 + 93 = 180
x = 180 - 133
x = 47
