Latus Rectum

parabola of Class 11

Focal Chord

A chord of parabola which passes through its focus is called a focal chord.

Latus Rectum

The chord through focus and perpendicular to the axis of the parabola is called the latus rectum. Two parabolas are said to be equal if their latus rectum are equal. Length of latus rectum of y2 = 4ax is 4a.

Note: General equation of 2nd degree will represent a parabola only if second degree term in the equation form a perfect square.

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