Answer:
when they are intersecting at a 90 degree angle.
Step-by-step explanation:
when lines intersect, they just cross over one another at any point. but with perpendicular lines, they have to be at a right angle. an example of this is a square. all of its corners are perpendicular
Answer:
... sorry
Step-by-step explanation:
...
The difference starts off by 7. Then it continues to double. Then the answer is 14, 28, 42. The answer doubles every time.
Answer:
c=A/2n
Step-by-step explanation:
A=2nc
c=A/2n