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Question From class 9 Chapter LINES AND ANGLES

# If a line is perpendicular is one of two given parallel lines;then it is also perpendicular to the other line.

If a line is perpendicular is one of two given parallel lines;then it is also perpendicular to the other line.
3:24
STRAIGHT LINES | POINT OF INTERSECTION OF TWO LINES, CONDITION OF CONCURRENCY OF TWO LINES, LINE PARALLEL & PERPENDICULAR TO A GIVEN LINE, EQUATION OF BISECTOR OF THE ANGLE BETWEEN THE LINES, POSITION OF A POINT RELATIVE TO A PLANE | Find the point of intersection of two lines by substitution and cross multiplication method., Condition for concurrency of three lines., Line Parallel to a given line., Line Perpendicular to a given line., Foot of perpendicular on a given line., Condition of line to be parallel,perpendicular and intersecting., Find the image of the point with respect to line mirror., Find the position of a point relative to a line (ax+by+c=0).
40:09
Prove that two lines perpendicular to the same line are parallel to each other.
1:42
Draw a circle and two lines parallel to a given line such that one is a tangent and the other, a secant to the circle.
2:08
The two lines 3x + 4y - 6 = 0 and 6x + ky - 7 = 0 are such that any line which is perpendicular to the first line is also perpendicular to the second line . <br> Then , k = .
2:43
If each of the two lines is perpendicular to the same line, what kind of lines are they to each other?
2:04
If one of the lines given by is perpendicular to the line , then the value of k is
3:22
Draw a line segment AB of length 8 cm. At each end of this line segment, draw a line perpendicular to AB. Are theses two lines parallel ?
2:28
Which of the following statements are true (T) and which are false (F)? Give reasons. (i)If two lines are intersected by a transversal, then corresponding angles are equal. (ii)If two parallel lines are intersected by a transversal, then alternate interior angles are equal. (iii)Two lines perpendicular to the same line are perpendicular to each other. (iv)Two lines parallel to the same line are parallel to each other. (v)If two parallel lines are intersected by a transversal, then the interior angle on the same side of the transversal are equal.
2:41
Draw a circle and two lines parallel to a given line such that one is a tangent and the other, a secant to the circle.
1:02
Two lines are repectively perpendicular to two parallel lines. Show that they are parallel to each other.
1:59
If one of the lines represents by is perpendicular to one of the line then k=
3:55
Two lines l and , are perpendicular to the same line n. Are l and m perpendicular to each other? Give reason for your answer.
2:05

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