Q. 94.6( 7 Votes )

In figure 5.36 AB

Answer :

Given:


AB || CD, CD || EF and y : z = 3 : 7


Theory:


If 2 lines are parallel then their corresponding angles are equal


If 2 lines are parallel then sum of their internal angles is 180°


If y : z = 3 : 7


Let y and z be 3a and 7a


As AB || EF


By alternate interior angles


x = z


x = 7a


As AB || CD


By interior angles


x + y = 180°


7a + 3a = 180°


10a = 180°


a = = 18°


x = 7 × 18° = 126°


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses