Yes.
true
In CAD, an ellipse is typically represented as a true conic section rather than a four-circle ellipse. A true conic section is defined mathematically as the set of points where the sum of the distances to two focal points is constant. While some CAD systems may approximate an ellipse using arcs of circles for convenience, the most accurate representation adheres to the geometric definition of an ellipse as a conic section.
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
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.
Yes, some elliptical orbits are more circular than others. An ellipse has two main characteristics - its eccentricity and its semi-major axis. The closer the eccentricity is to 0, the more circular the orbit is.
True
true
In CAD, an ellipse is typically represented as a true conic section rather than a four-circle ellipse. A true conic section is defined mathematically as the set of points where the sum of the distances to two focal points is constant. While some CAD systems may approximate an ellipse using arcs of circles for convenience, the most accurate representation adheres to the geometric definition of an ellipse as a conic section.
Earth's orbit around the Sun is not a perfect circle but an ellipse, which is an elongated oval shape. According to Kepler's First Law of Planetary Motion, the Sun occupies one of the two foci of this ellipse. This elliptical shape causes variations in Earth's distance from the Sun throughout the year, influencing seasonal changes. However, the orbit's eccentricity is relatively low, making it appear nearly circular.
yes