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In general method of drawing an ellipse, a vertical line called as ____ is drawn first.

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In general method of drawing an ellipse, a vertical line called as ____ is drawn first.

(a) Tangent

(b) Normal

(c) Major axis

(d) Directrix

The question was posed to me in my homework.

Question is taken from Construction of Ellipse in division Geometrical Construction of Engineering Drawing

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The correct option is (d) Directrix

The best I can explain: In the general method of drawing an ellipse, a vertical line called as directrix is drawn first. The focus is drawn at a given distance from the directrix drawn. The eccentricity of the ellipse is less than one.

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