Answer:
E
Step-by-step explanation:
2/5
two dimensional triangle
im not smart but im pretty sure its that
16/21
11) x = 45
12) x = 30
11)
3x + x = 180
4x = 180
x = 45
12)
4x = 5x - 30
4x - 5x = -30
-x = -30
x = 30
dont yu multiply them all
