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India
Class XI

Perpendicular Lines

Interactive practice questions

Select the single best definition that describes two perpendicular lines.

Two lines that intersect each other at an angle of 90°.

A

Two lines that have only one intersection.

B

Two lines whose product of gradients is equal to $1$1.

C

Two lines that have no intersections.

D
Easy
< 1min

If two lines are perpendicular, what is the product of their gradients?

Easy
< 1min

Are the lines $y=x+2$y=x+2 and $y=x-2$y=x2 perpendicular?

Easy
< 1min

Are the following lines perpendicular:

$L_1$L1: $y=7x-5$y=7x5

$L_2$L2: $y=-7x+6$y=7x+6

Easy
< 1min
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Outcomes

11.CG.SL.1

Brief recall of 2D from earlier classes. Slope of a line and angle between two lines. Various forms of equations of a line: parallel to axes, point-slope form, slope-intercept form, two-point form, intercepts form and normal form. General equation of a line. Distance of a point from a line.

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