Sum of all interior angles in a triangle = 180
let missing angle = x
x + 144 + 13 = 180
x + 157 = 180
x = 23
answer
23 degrees
Answer:
x=4
Step-by-step explanation:
7-2x=2x-8-1--->distributive property
-4x=-16--->subtraction property
x=4--->division property
X = 90-22
x = 68
..............
