Yes.
true
Not quite sure what you mean by "true way". You can measure it with a string or a similar flexible object. Or you can measure length and width, and - assuming it is an ellipse - use the formula for the circumference of an ellipse - or rather, an approximation formula.
TRUE!
They have negative values
true
False
true
true
The planets orbit in an ellipse. An ellipse is described as a geometric shape where the sum of the distance from the foci at any point is the same. An ellipse has three main points. Two foci and a center like a circle. While a true circle has all its external points equidistant from its center, an ellipse measures its points from the foci, which are equidistant to the center point at on both sides. The planets ellipse is closer to a circle than an all out ellipse, however, the orbit is still a true ellipse. It is also true that the shape of a planet's orbit (an ellipse) is a conic section, i.e. the intersection of a right circular cone where the intersecting plane is not perpendicular to the cone's axis, but less than being parallel to one of the cone's nappes.
Essentially an ellipse is a circle rotated about an axis without changing the point of view.
The equation of an ellipse is ((x-x0)^2)/b^2)+((y-y0)^2/a^2)=1 hope that helps! : ) ____________________________________________________ that equation is for an ellipse, true, but that's not what is needed here. In this case you can just use Kepler's 3rd law which is: p^2=a^3 Which means the period (in years) squared is equal to the radius (or semi major axis) in AU cubed.
What a great question ! The earth's orbit is elliptical, the ellipse has two foci (focuses), and the center of the sun is at one of them. All true. But the earth's orbit is so close to being circular that the distance between the two foci isn't that great, and the other focus is inside the sun ! I'm not sure about Pluto, but I think that's true for all the other planets.
True
true
Yes, True
yes
the axis of neck is z axis so this is a true answer.