Intersecting lines are perpendicular?

sometimes,always,never,not enough information

12 Answers

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  • 1 decade ago
    Favorite Answer

    sometimes

  • 1 decade ago

    Not always. Perpendicular means to make a 90 degree angle, so if the lines intersect and create this right angle, then they are perpendicular. If they intersect at different angles, like 20 degrees or 30 degrees or anything but 90 degrees, they're not perpendicular.

    Think of perpendicular lines being like a big plus sign, and you'll get it.

  • 1 decade ago

    Lines can intersect at any angle greater than zero. They don't necessarily have to intersect perpendicular to each other (90 degrees). The answer is sometimes.

  • 1 decade ago

    if there are two lines such as

    y = 2x + 4 . . . . . .equation.1 . . . the slope of this line is 2

    y = -1/2 x +6 . . . .equation 2 . . . the slope of equation 2 is -1/2

    if the slope of one line is equal to negative reverse fraction then the two lines are perpendicular

    or . . . . . . m1 = - 1 / m2

    . . . . . . . 2 = - 1 / ( - 1 / 2 ) = 2

    . . . . . . . . . 2 = 2 . . . the two lines are perpendicular

    you try this two perpendicular lines

    y = 4/5 x +2 . . . . . equation 1

    y + 5/4x -8 = 0 . . . . equation 2

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  • Anonymous
    5 years ago

    ✐Explanation✐ Not all the times. Think about two lines forming no right angles. If they don't form those angles, then they are not perpendicular. I hope that helps.

  • 1 decade ago

    perpendicular lines are always intesecting, but intersecting lines aren't always perpendicular

  • 1 decade ago

    Sometimes. Perpendicular looks like T , while parallel looks like =

  • 1 decade ago

    Yep, sometimes. If their slope are negative reciprocals of one another, they are perpendicular.

  • Carmen
    Lv 4
    1 decade ago

    sometimes

  • 1 decade ago

    sometimes

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