Answer:
see explanation below
Explanation:
1. the outside angle is 86o so the angle at vertex of triangle is 180 - 86 = 94o
Figure 1 is an isosceles triangle so 2x + 94 = 180
2x = 86
x = 43
P = 180 - 43 = 137
2. Supplementary angle to x = 180 - (65 + 45).
In other words, x = 65 + 45 = 110
3. I'm trying to solve the 3rd figure
Sum of angles: x + y + 90 + 100 = 360
x + y = 360 - 190
x + y = 170
without more information, I can't solve the 3rd figure