2 answers:
The answer is 140°
Because we can use exterior angle property here
<u>Exter</u> <u>ior</u> <u> </u> <u>angl</u> <u>e</u> <u> property</u> <u> </u> <u>:</u> It states that exterior angle is the sum of two opposite interior angles
y = 120 + 20 = 140°
Answer:
140 degrees
Step-by-step explanation:
A triangle's sum of interior angles is 180.
120+20=140
180-140=40
So X= 40.
X and Y are supplementary, so they both add up to 180.
180-40=140
Therefore, Y=140.
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