Answer:
y = 126° + 29° = 155°
Step-by-step explanation:
I think this may be a solution:
126°+29°=155°
So, y=155°
678 cu. in.
hope this helps!
Vertex
Vertex is the 'point' of an angle
y should be 5, when u solve for the angles u get 68+87+c=180, if c is y^2 then y is 5
