Write and solve an equation to find the value of x and a missing angle in each triangle below. Use the number bank to help you check your solutions as you fill in each blank. Not all of the numbers will be used.

Answer:
1. x = 30
REC = 130
Step-by-step explanation:
2x + 70 = 4x + 10
60 = 2x
x = 30
you try the others
Good luck :D