Read the instructions that came with the test- we can't tell you because every test is different and what means positive on some tests means negative on another test.
It depends what pregnancy test it is. they are all different. I think on most though, 2 lines generally means positive, no matter how faint one of them is. Try reading the instructions, and it might be best to take another digital test, as they are simpler to understand because they just say 'pregnant' or 'not pregnant'
Vertical Velocity
Ing
If horizontal, a circle. If vertical, a semi-circle.
There is nothing negative about them.
a circle !
No. Because a vertical line will pass through two points on the graph.
Radii are always positive. No, it is not possible to draw a circle with negative radius.
When the vertical circle of the theodolite is to the left of observer, it is in face left position. Similarly when the vertical circle is to the right of observer it is in face right position.
angel halo
Relationship between radius and area of a circle is nonlinear. Area = pi * radius^2, so it is like a quadratic. If you graphed radius on the horizontal, and area on the vertical, it would be a parabola (actually a half of a parabola, since you cannot have a negative radius).
If the half circle is on its flat side, the radius is its height. If the straight part of the half-circle is vertical, the radius is its width.