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Home /Doubts and Solutions/CBSE/Class 9/Mathematics/Lines And Angles/Parallel Lines And Co Interior Angles

Parallel Lines And Co Interior Angles Free Doubts and Solutions

CBSE - IX - Mathematics - Lines and Angles

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Asked by Girishdhawan 1st July 2018, 3:19 PM
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CBSE - IX - Mathematics - Lines and Angles

can u explain me the full chapter sir

Asked by Veena 1st August 2016, 11:55 AM
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CBSE - IX - Mathematics - Lines and Angles

In figure, AB||DC, BDC = 30° and BAD = 80°, find x, y and z.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

AB and CD are the bisectors of the two alternate interior angles formed by the intersection of a transversal 't' with parallel lines l and m (Shown in Figure) Show that AB||CD.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

In the given figure, l||m, then find the value of x?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

If fig., if AB||CD, EFCD and GED = 126°, find AGE, GEF and FGE.

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CBSE - IX - Mathematics - Lines and Angles

In figure, prove that .

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CBSE - IX - Mathematics - Lines and Angles

In given figure, find the values of x and y.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

In fig., AB||CD and CD||EF. Also EA AB. If BEF= 40o, then find x, y, z.

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CBSE - IX - Mathematics - Lines and Angles

In fig., if AB||CD, APQ = 50o and PRD = 127o, find x and y.

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CBSE - IX - Mathematics - Lines and Angles

In fig., l||m, show that 1 + 2 - 3 = 180o

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

In fig., PQ||RS and T is any point as shown in figure then show that PQT + QTS + RST = 360o

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CBSE - IX - Mathematics - Lines and Angles

In figure, if AB||CD then find PQR.

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CBSE - IX - Mathematics - Lines and Angles

In figure prove that l||m.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

In fig., l1||l2 and m1||m2. Prove that 1 + 2 = 180o.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

Lines AB and CD are parallel and P is any point between the two lines as shown in figure. Show that DPB = x + y.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

In figure, if AB||DE, ABC = 75o and CDE = 145o, then find BCD.

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

In figure, PQ PS, PQ||SR, SQR = 25o and QRT = 65o. Find the value of x and y.

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CBSE - IX - Mathematics - Lines and Angles

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CBSE - IX - Mathematics - Lines and Angles

If the arms of one angle are respectively parallel to the arms of another angle, as shown in the figure then prove that the two angles are supplementary.

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CBSE - IX - Mathematics - Lines and Angles

Prove that two lines which are parallel to the same line are parallel to one another.

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CBSE - IX - Mathematics - Lines and Angles

AB || CD. Find the values of p, q and r.

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CBSE - IX - Mathematics - Lines and Angles

For what value of x will the lines m and n be parallel to each other?

Asked by Topperlearning User 4th June 2014, 1:23 PM
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CBSE - IX - Mathematics - Lines and Angles

The arms of an angle are respectively parallel to the arms of another angle as shown in the figure. Show that the two angles are equal.

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CBSE - IX - Mathematics - Lines and Angles

In the given figure, AB || CD. Find the values of x, y and z.

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CBSE - IX - Mathematics - Lines and Angles

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CBSE - IX - Mathematics - Lines and Angles

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CBSE - IX - Mathematics - Lines and Angles

Asked by Topperlearning User 6th December 2013, 2:35 AM
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CBSE - IX - Mathematics - Lines and Angles

Two parallel lines are intersected by a transversal in such a way that, the co-interior angles such that one angle is thrice the other. Find the angles.

Asked by Topperlearning User 4th December 2013, 1:25 AM
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CBSE - IX - Mathematics - Lines and Angles

RS || PQ. Find the value of x.

Asked by Topperlearning User 30th April 2013, 9:00 AM
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