Q5 A of 16 Page 88

Examining the measurement of the angles given below let’s conclude logically AB&CD are parallel.


As we know that if if two lines are parallel and cut by a transversal then the corresponding angles are equal,

Alternate interior angles are equal


Alternate exterior angles are equal,


Sum of co-interior angles is 180°.


So, the reverse will also be true.


Now, from the figure we have,


Sum of co-interior angles = 125° +30° =155° ≠180°


Hence, AB and CD are not parallel.


More from this chapter

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3

If AB||CD then let’s write the measurement of the angles given below:


 4

Lets write the measurement of 7 angles from the figure beside if XY||PQ.


 5 B

Examining the measurement of the angles given below let’s conclude logically AB&CD are parallel.


 5 C

Examining the measurement of the angles given below let’s conclude logically AB&CD are parallel.