Answer:
40.9
Step-by-step explanation:
180-139.1
Tom arranged 3 groups of 4
Answer: 43
Explanation: All triangles add up to 180. We can subtract angle Z to get 86. Since X and Y are equal, we can divide 86 by 2.
Supplementary angles add to 180
they are x and y
x is 88
what is y
x+y=180
88+y=180
minus 88 from both sides
y=92
angle 4 is 92 degrees