Answer: The "point" is the undefined term you are looking for to define an angle.
Seems like none of them +4 unit up yaxis
Answer:
6
Step-by-step explanation:
The first number: a
The second number: b
The third number: c
a+b+c=72
b=7a
b-c=18
⇒a=6; b=42;
c= 24
